Paleontology Paleoecology uses data from fossil s and subfossils to reconstruct the ecosystem s of the past. It involves the study of fossil organisms and their associated remains, including their Biological life cycle life cycle , living interactions, natural environment , and manner of death and burial to reconstruct the paleoevironment . The fossil record has been studied to try and clarify the relationship animals have to their environment, in part to help understand the current state of biodiversity . A close link has been found between vertebrate taxonomic and ecological diversity, that is, the diversity of animals and the Ecological niche niche s they occupy. ref name SahneyBentonFerry2010LinksDiversityVertebrates cite journal url http rsbl.royalsocietypublishing.org content 6 4 544.full.pdf html author Sahney, S., Benton, M.J. and Ferry, P.A. year 2010 title Links between global taxonomic diversity, ecological diversity and the expansion of vertebrates on land journal Biology Letters doi 10.1098 rsbl.2009.1024 volume 6 pages 544 547 format PDF issue 4 pmid 20106856 pmc 2936204 ref Reconstruction and measurement Image ZygospiraAttached.jpg thumb left Zygospira modesta , spiriferid brachiopods , preserved in their original positions on a trepostome bryozoa n Cincinnatian Upper Ordovician of southeastern Indiana . The aim of paleoecology is therefore to build the most detailed model possible of the Ecology life environment of previously living organisms found today as fossils. Such reconstruction takes into consideration complex interactions among environmental factors such as temperatures, food supplies, and degree of solar illumination. Often much of this information is lost or distorted by the fossilization process or diagenesis of the enclosing sediments, making interpretation difficult. The environmental complexity factor is normally tackled through statistics statistical analysis of the available numerical data quantitative paleontology or paleostatistics ... more details
italic title Taxobox regnum Bacteria phylum Cyanobacteria genus Morania Morania is a genus of cyanobacterium preserved as carbonaceous film s ref name Fenton in the Middle Cambrian Burgess Shale . ref name Taphonomy it is present throughout the shale ref name Paleoecology 2580 specimens of Morania are known from the Greater Phyllopod bed , where they comprise 4.90 of the community. ref name Taphonomy cite doi 10.2110 palo.2003.P05 070R ref It is filamentous, ref name Fenton forms sheets, ref name Paleoecology and resembles the modern cyanobacterium Nostoc . ref name Fenton cite journal doi 10.2307 2421265 author Carroll Lane Fenton year 1943 title Pre Cambrian and Early Paleozoic algae journal American Midland Naturalist volume 30 issue 1 pages 83 111 jstor 2421265 ref It would have had a role in binding the sediment, ref name Paleoecology cite doi 10.1016 j.palaeo.2007.05.023 ref and would have been a food source for such organisms as Odontogriphus and Wiwaxia . ref name Paleoecology External links Burgess Shale species 85 References Reflist Category Cyanobacteria Category Burgess Shale fossils bacteria stub paleo stub ... more details
Refimprove type animal date December 2009 Taxobox name Pseudopus The most robust taxon of the of the subfamily Anguinae. ref name Klembara et.al.2010 cite journal author Klembara et.al. year 2010 month March title Revision of the Anguine lizard Pseudopus laurillardi Squamata, Anguidae from the miocene of Europe, with comments on paleoecology journal J Paleontology volume 84 pages 159 196 ref regnum Animal ia phylum Chordate Chordata classis Reptile Reptilia ordo Squamata subordo Lacertilia familia Anguidae subfamilia Anguinae genus Pseudopus Classification Genus Pseudopus Pseudopus apodus Extant species Known from fossils only Pseudopus laurillardi Pseudopus pannonicus References Reflist Category Anguids Category Monotypic reptile genera Lizard stub uk ... more details
John Kappelman is professor of anthropology at the University of Texas at Austin . His research centers on hominoid evolution and human evolution human origin s, including paleoecology , functional morphology , stratigraphy and geochronology . External links http www.utexas.edu cola depts anthropology physical kapp.html John Kappelman home page Persondata Metadata see Wikipedia Persondata . NAME Kappelman, John ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Kappelman, John Category Living people Category Year of birth missing living people Category American anthropologists Category Article Feedback 5 US anthropologist stub ... more details
Characteristic of the Neoproterozoic and Cambrian periods, the heterogeneous group called calcimicrobes are calcareous colonial microfossils, which include many morphologically dissimilar organisms, whose effect in massive aggregations, in association with shelly Animal metazoa ns, was to lay down the earliest recognizable reef systems compare Archaeocyatha Archaeocyathid s. The earliest recognizable patch reefs date to the Cambrian Subdivisions Tommotian . Individual calcimicrobes laid down calcium carbonate in tubules, threads, chambered structures and other forms. The term calcimicrobe is useful in recreating the paleoecology of these systems. The term was first applied by N.P. James and D.I. Gravestock in 1990. References James,N.P. and D.I. Gravestock. 1990. Lower Cambrian shelf and shelf margin buildups, Flinders Ranges, South Australia. Sedimentology 37 455 480. Category Paleontology Category Fossils Category Cambrian paleo stub ... more details
Orphan date February 2009 ECOFIT is multi institutional ecological and paleoecology operation started in Lima in 1992. It specializes in montitoring ecology and paleo ecology of tropical forests, in parts of South America and also in coastal Central Africa . The program involves the study of fossils and soils of tropical forests particularly related to the Holocene period. ref cite web author Riera, B url http www.etfrn.org etfrn newsletter nl29 oip.html theeco title The Ecofit Program Palaeoecology of Central Africa and South America publisher European Tropical Forest Research Network accessdate August 23, 2008 ref References Reflist Category Ecology ecology stub ... more details
Taxobox fossil range Ediacaran regnum Animalia phylum Echinodermata subphylum Pelmatozoa classis Edrioasteroidea genus Rhenopyrgus Rhenopyrgus is an extinct echinoderm in the class Edrioasteroidea . A new species, R. piojoensis , was described from the Silurian of Argentina by Colin D. Sumrall, Susana Heredia, Cecilia M. Rodr guez and Ana I. Mestre in 2012. ref Cite journal author Colin D. Sumrall, Susana Heredia, Cecilia M. Rodr guez and Ana I. Mestre year 2012 title The first report of South American edrioasteroids and the paleoecology and ontogeny of rhenopyrgid echinoderms journal Acta Palaeontologica Polonica volume in press issue pages url http app.pan.pl article item app20110108.html doi 10.4202 app.2011.0108 ref References reflist Category Echinoderms ... more details
Bacteriohopanepolyols BHPs , bacteriohopanoids, or bacterial pentacyclic triterpenoids are commonly found in the lipid cell membranes of many bacteria . ref name Blumenbergetal2009 Blumenberg, M., Seifert, R., Kasten, S., Bahlamnn, E., and Michaelis, W. 2009 Euphotic zone bacterioplankton sources major sedimentary bacteriohopanepolyols in the Black Sea. Geochemica et Cosmochimica Acta , 73, 750 766 ref BHPs are frequently used as biomarkers in sedimentary rocks and can provide paleoecology paleoecological information about ancient bacterial communities. See Also Hopane References Reflist Category Terpenes and terpenoids ... more details
Hans Dieter Sues is a German born paleontologist who is Senior Scientist and Curator of Vertebrate Paleontology at the National Museum of Natural History of the Smithsonian Institution in Washington, DC. He received his education at Johannes Gutenberg Universit t Mainz University of Mainz , University of Alberta , and Harvard University Ph.D., 1984 . Before assuming his present position, Sues worked at the Royal Ontario Museum and the University of Toronto and at the Carnegie Museum of Natural History in Pittsburgh. He is interested in the diversity, paleoecology, and evolutionary history of Mesozoic tetrapods, especially archosaurian reptiles and cynodont therapsids, and the history of biology and paleontology. Sues has discovered a number of new dinosaur s and other extinct terrestrial vertebrate s in Mesozoic continental strata around the world. He has authored or co authored over 100 articles and book chapters on vertebrate paleontology and paleoecology . Sues has edited Evolution of Herbivory in Terrestrial Vertebrates Cambridge Univ. Press, 2000 and co edited Terrestrial Ecosystems through Time with A. K. Behrensmeyer et al. Univ. of Chicago Press, 1992 , In the Shadow of the Dinosaurs Early Mesozoic Tetrapods with N. C. Fraser Cambridge Univ. Press, 1994 , and Major Transitions in Vertebrate Evolution with J. S. Anderson Indiana Univ. Press, 2007 . He is also active in promoting the value of natural history collections for addressing major questions in current science. Sues was elected a Fellow of the Royal Society of Canada in 2003 and a Fellow of the American Association for the Advancement of Science in 1998. ref Who s Who in Canada . Univ. of Toronto Press, Toronto, 1997 present. ref ref http www.mnh.si.edu about sues.html ref The pachycephalosaur Hanssuesia is named for him. References reflist Persondata Metadata see Wikipedia Persondata . NAME Sues, Hans Dieter ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH ... more details
File Amurru.JPG thumb 300px right Fertile Crescent the Levantine corridor is by the sea The Levantine corridor is the relatively narrow strip between the Mediterranean Sea to the northwest and desert s to the southeast and connects Africa into Eurasia . This corridor is a land route of migrations of animals between Eurasia and Africa. In particular, it is believed that early hominid s Early human migrations spread from Africa to Asia and Europe via the Levantine corridor and Horn of Africa . ref N. Goren Inbar, John D. Speth eds. , Human Paleoecology in the Levantine Corridor . 1994, ISBN 1842171550 http www.palarch.nl wp content vos de j 2006 review of goren inbar n and jd speth eds 2004 human paleoecology in the levantine corridor published by oxbow books.pdf book review ref The corridor is named after the Levant . The Levantine Corridor is the western part of the Fertile Crescent , the eastern part being Mesopotamia . Botanists recognize this area as a dispersal route of flora plant species. ref Bar Yosef O. Pleistocene connections between Africa and Southwest Asia an archaeological perspective, African Archaeological Review , 1987, vol. 5, pp. 29 38. ref Through genetic studies, researchers have found that the Levantine corridor was more important through Paleolithic and Mesolithic periods for bi directional migrations of peoples and certain chromosome s between Africa and Eurasia than was the Horn of Africa. ref http hpgl.stanford.edu publications AJHG 2004 v74 p000 0130.pdf J. R. Luis et al. , The Levant versus the Horn of Africa Evidence for Bidirectional Corridors of Human Migrations , American Journal of Human Genetics , 74 532 544. ref References reflist Category Mediterranean Category Ancient Near East Category Physiographic divisions Category Paleobotany Category Paleozoology Category Recent single origin hypothesis Category Animal migration id Koridor Levant ... more details
Barbara W. Leyden 18 December 1949 &ndash 4 February 2006 was an United States American palynologist and Paleoecology paleoecologist . Leyden earned her Ph.D. from Indiana University in 1982. She conducted her research and taught at University of South Florida and frequently wrote about climate change in the late Pleistocene era in the western hemisphere . External links http www.cas.usf.edu geology About 20Us Faculty leyden leyden.htm Barbara Leyden website via University of South Florida Persondata Metadata see Wikipedia Persondata . NAME Leyden, Barbara ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH 18 December 1949 PLACE OF BIRTH DATE OF DEATH 4 February 2006 PLACE OF DEATH DEFAULTSORT Leyden, Barbara Category 2006 deaths Category Indiana University alumni Category American academics Category 1949 births US academic bio stub ... more details
James W. Valentine is an American evolutionary biologist and Professor Emeritus in the Department of Integrative Biology at the University of California, Berkeley . He has published widely and in addition to peer reviewed publications has written several books, including On the Origin of Phyla 2004 ISBN 0 226 84548 6 Phanerozoic Diversity Patterns Profiles In Macroevolution 1985 ISBN 0 691 08374 6, Editor Evolving The Theory And Processes Of Organic Evolution 1979 ISBN 0 8053 0310 3, with Francisco J. Ayala Evolution 1977 with Theodosius Dobzhansky , G. Ledyard Stebbins and Ayala Evolutionary Paleoecology of the Marine Biosphere 1973 ISBN 0 13 293720 4 External links http www.ucmp.berkeley.edu people jwv jwv.html Homepage Persondata Metadata see Wikipedia Persondata . NAME Valentine, James W. ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Valentine, James W. Category Evolutionary biologists Category Living people Category University of California, Berkeley faculty Category Members of the United States National Academy of Sciences US biologist stub geneticist stub tr James W. Valentine ... more details
Unreferenced date December 2009 Orphan date December 2009 Bromalites are the fossilised remains of material sourced from the digestive system of organisms. As such, they can be broadly considered to be trace fossils . The most well known types of bromalites are fossilised faeces or coprolites . However, other types are recognised, including regurgitalites fossilised remains of vomit or other regurgitated objects such as owl pellets cololites intestinal contents and gastrolites stomach contents . Regurtitalites and coprolites are thus essentially known only after they have left the body of the producing organisms, whereas gastrolites and cololites are only found in situ in their respective organs. Whilst coprolites and regurgitalites are often difficult to tie to a specific producer, all bromalites potentially provide important and sometimes unique evidence concerning diet and other trophic factors. They are thus useful indicators for reconstructing ancient food webs in paleoecology palaeoecology . Category Paleontology it Bromalite ... more details
Infobox Journal cover discipline Paleontology language English, French, Spanish, German website http www.elsevier.com wps find journaldescription.cws home 622310 description description publisher Elsevier country Netherlands abbreviation None history 1968 to present frequency Bimonthly ISSN 0016 6995 Geobios is an academic journal published bimonthly by the Dutch publishing house Elsevier . Geobios is an international journal of paleontology. Description Articles are published in English, French, Spanish and German. In addition to the language of the article, abstracts and keywords are published in French and English. Although devoted to general paleontology, related topics such as paleobiology , stratigraphy , biostratigraphy , paleogeography and paleoecology are also covered. History Geobios was first published in 1968. In 2000 it became the official publication of the European Association of Paleontology. Since 2001 the journal has been published by Elsevier. External links http www.elsevier.com wps find journaldescription.cws home 622310 description description Geobios website Category Paleontology journals Category Elsevier academic journals Category Publications established in 1968 Category Multilingual journals Category Bimonthly journals sci journal stub ... more details
Italic title taxobox fossil range fossil range period start lower cambrian period end upper cambrian Olenellus Ptychagnostus ref ref name kuPC122 regnum Animal ia phylum Cnidaria classis Anthozoa subclassis Octocorallia ordo Alcyonacea genus Margaretia species M. dorus binomial Margaretia dorus The Burgess shale organism Margaretia dorus resembles an Octocorallia Octocoral , according to C.D. Walcott 1931 . It was later reclassified as a green algae closely resembling modern Caulerpa by D.F. Satterthwait in her Ph.D. thesis in 1976 ref Donna Fields Satterthwait, Paleobiology and Paleoecology of Middle Cambrian Algae from Western North America, Ph.D. Thesis University of California at Los Angeles, 1976. ref and confirmed by Conway Morris and Robison in 1988. ref name kuPC122 S.Conway Morris and R.A. Robison, More soft bodied Animal and Algae from the Middle Cambrian of Utah and British Columbia , University of Kansas Paleontological Contributions, Paper 122, pages 8 11, 1988. http hdl.handle.net 1808 3691 ref References reflist Anthozoa stub Category Alcyonacea ... more details
Richard S. Laub is a scientist from the United States. He is curator of geology at the Buffalo, New York Other points of interest Buffalo Museum of Science , and directs excavations at the Hiscock Site in Byron, New York . His work includes development of the hypothesis that tuberculosis led to the extinction of the mastodon . Personal life and education Richard Laub has a bachelor degree from Queens College, City University of New York , a Masters of Science in paleontology and paleoecology from Cornell University , and a PhD. from the University of Cincinnati . ref name buffalo http www.sciencebuff.org dr laub.php Buffalo Museum of Science Dr Laub Bot generated title ref Work in paleoecology and archaeology Laub s scientific interests are in paleoecology and archaeology of the Northeastern United States. He is curator of geology at the Buffalo Museum of Science and directs excavations at the Hiscock Site in Byron, New York . ref name buffalo ref Journey to the Ice Age Discovering an Ancient World by Peter L. Storck , 2004, p. 221 2 ref During the course of his work he has demonstrated that giant condor s once lived in upstate New York. ref http www.stanford.edu group stanfordbirds text essays Conservation Condor.html Conservation of the California Condor Bot generated title ref Richard Laub has also hypothesized that an epidemic of tuberculosis helped drive the mastodons mastodon to extinction. ref http www.foxnews.com story 0,2933,215220,00.html FOXNews.com Tuberculosis May Have Helped Bring Down Mastodons Science News Science & Technology Technology News Bot generated title ref ref http news.nationalgeographic.com news 2006 10 061003 mastodons.html Mastodons Driven to Extinction by Tuberculosis, Fossils Suggest Bot generated title ref ref http www.livescience.com animals 060922 mastodon tb.html Tuberculosis Helped Bring Down Mastodons LiveScience Bot generated title ref He finds it likely that most Pleistocene late Ice Age mastodon in North America had the disea ... more details
Infobox journal title Journal of Vertebrate Paleontology cover editor Robert R. Reisz discipline Paleontology , vertebrate s peer reviewed language English language English abbreviation J. Vert. Paleontol., JVP publisher Society of Vertebrate Paleontology country United States frequency Quarterly history 1980 present openaccess license impact 2.346 impact year 2009 website http www.vertpaleo.org publications index.cfm link1 link1 name link2 link2 name RSS atom JSTOR OCLC LCCN CODEN ISSN 0272 4634 eISSN 1937 2809 boxwidth The Journal of Vertebrate Paleontology JVP was founded in 1980 at the University of Oklahoma by Dr. Jiri Zidek . It is a scientific journal that publishes original contributions on all aspects of the vertebrate paleontology , including vertebrate vertebrate origins , evolution , Morphology biology functional morphology , taxonomy , biostratigraphy , paleoecology , paleobiogeography , and paleoanthropology . See also Society of Vertebrate Paleontology Category Paleontology journals Vertebrate Paleontology Category University of Oklahoma Category Publications established in 1980 Category Quarterly journals Category English language journals es Journal of Vertebrate Paleontology pl Journal of Vertebrate Paleontology pt Journal of Vertebrate Paleontology ... more details
Taxobox fossil range fossil range Late Jurassic image Protospinax annectens, Pal ontologisches Museum M nchen.JPG image caption Protospinax annectens regnum Animal ia phylum Chordate Chordata classis Chondrichthyes subclassis Elasmobranchii superordo Hypnosqualea familia incertae sedis genus Protospinax genus authority Woodward, 1919 Protospinax is an extinct genus of cartilaginous fish found in the Solnhofen limestone s of southern Bavaria . It is a difficult taxon to accommodate in taxonomies. Formerly known from only two specimens, further museum specimen s were discovered at the Museum of Comparative Zoology of Harvard University in the 1990s, having been misidentified as Squatina and Heterodontus . References cite book author Marcelo R. de Carvalho & John G. Maisey chapter Phylogenetic relationships of the Late Jurassic shark Protospinax Woodward 1919 Chondrichthyes Elasmobranchii pages 9 46 title Mesozoic Fishes Systematics and Paleoecology editor G. Arratia & G. Viohl year 1996 publisher Friedrich Pfeil location M nchen, Germany isbn 3 923871 90 2 chapterurl http www.pfeil verlag.de 07pala pdf 1 90d01.pdf format Portable Document Format PDF excerpt Category Cartilaginous fish Category Late Jurassic fish paleo fish stub de Protospinax es Protospinax ... more details
Automatic taxobox fossil range Late Cretaceous authority de Saez, 1928 in paleontology 1928 type species extinct Microsuchus schilleri type species authority de Saez, 1928 Microsuchus is an extinct genus of goniopholidid mesoeucrocodylia n. ref name CCM34 cite journal doi 10.1086 624165 last Mook first C. C. year 1934 title The evolution and classification of the crocodilia journal The Journal of Geology volume 42 issue 3 pages 295 304 ref Fossil s have been found that date back to the Late Cretaceous . ref name PJM98 cite journal last Markwick first P. J. year 1998 title Crocodilian diversity in space and time The role of climate in paleoecology and its implication for understanding K T extinctions journal Paleobiology volume 24 issue 4 pages 470 497 ref It may be a nomen dubium . ref http www.paleofile.com Demo Mainpage Taxalist Crocodilia.htm Crocodylomorpha at Paleofile.com Retrieved on August 4, 2009. ref References reflist External links http paleodb.org cgi bin bridge.pl?action checkTaxonInfo&taxon no 38362&is real user 1 Microsuchus in the Paleobiology Database portal Paleontology Neosuchia N. Category Cretaceous crocodylomorpha paleo archosaur stub ... more details
italic title Image Rogerella elliptica Jurassic.JPG thumb Rogerella elliptica bioerosion borings in a Middle Jurassic Callovian crinoid stem Matmor Formation , southern Israel . Rogerella is a small pouch shaped bioerosion boring a type of trace fossil with a slit like aperture currently produced by Acrothoracica acrothoracican barnacles . These crustaceans extrude their legs upwards through the opening for filter feeder filter feeding Seilacher, 1969 Lambers and Boekschoten, 1986 . They are known in the fossil record as borings in carbonate substrates shells and hardgrounds from the Devonian to the Recent Taylor and Wilson, 2003 . References cite journal author Lambers, P., Boekschoten, G.J. year 1986 title On fossil and recent borings produced by acrothoracic cirripeds journal Geologie en Mijnbouw volume 65 pages 257 268 doi cite journal author Seilacher, A. year 1969 title Paleoecology of boring barnacles journal American Zoologist volume 9 pages 705 719 doi 10.1093 icb 9.3.705 cite journal author Taylor, P.D., Wilson. M.A. year 2003 title Palaeoecology and evolution of marine hard substrate communities journal Earth Science Reviews volume 62 pages 1 103 doi 10.1016 S0012 8252 02 00131 9 External links http www3.wooster.edu geology Bioerosion Bioerosion.html Bioerosion Website at The College of Wooster http www3.wooster.edu geology bioerosion BioerosionBiblio.pdf Comprehensive bioerosion bibliography Category Trace fossils ... more details
Taxobox fossil range fossil range Silurian image image caption regnum Animal ia phylum Brachiopoda classis Rhynchonellata ordo Pentamerida familia Subrianidae genus Cymbidium genus authority Edwin Kirk Kirk, E. , 1926 type species Cymbidium actum Kirk, 1926 subdivision ranks Species subdivision Cymbidium imitor Johnson, Boucot and Murphy Cymbidium is a brachiopod genus in the order Pentamerida from Silurian Alaska ref Cymbidium, a new genus of Silurian pentameroid brachiopods from Alaska. Kirk, E., 1926, Proceedings of the United States National Museum 69 23 1 5. ref , from the Cape Phillips Formation from Baillie Hamilton Island , Arctic Canada ref http www.jgeosci.org content JCGS2001 3 4 zhang.pdf Paleoecology and paleobiogeography of Wenlockian Silurian brachiopods of the Cape Phillips Formation from Baillie Hamilton Island, Arctic Canada, Ning Zhang, Journal of the Czech Geological Society 46 3 4 2001 ref and Malay Peninsula Malaya ref http jpaleontol.geoscienceworld.org cgi content abstract 40 5 1027 Silurian brachiopods from Malaya. Arthur James Boucot, J. G. Johnson and C. R. Jones, Journal of Paleontology September 1966 v. 40 no. 5 p. 1027 1031 ref . See also List of brachiopod genera References reflist External links http paleodb.org cgi bin bridge.pl?action basicTaxonInfo&taxon no 28191 Cymbidium on paleodb.org Category Brachiopods Category Silurian animals Brachiopod stub ... more details
. Discovering Fossil Fishes. Henry Holt, New York. 223 pages. Martin, R. 2002. Taxonomic Revision and Paleoecology ... templates showETD.cfm?recnum 2728 Taxonomic Revision and Paleoecology of Middle Devonian Eifelian ... more details
Resurrection ecology is an evolutionary biology technique whereby researcher s hatch dormant egg biology eggs from lake sediments to study animal s as they existed decades ago. It is a new approach that might allow scientist s to observe evolution as it occurred, by comparing the animal forms hatched from older eggs with their extant Kinship descendants . One such researcher in the field is W. Charles Kerfoot of Michigan Technological University whose results were published in the Academic journal journal Limnology and Oceanography . He reported on success in a search for resting eggs of zooplankton that are dormant in Portage Lake Keweenaw Portage Lake on Michigan s Upper Peninsula . The lake has undergone a considerable amount of change over the last 100 years including flood ing by copper mine debris, dredging , and eutrophication . Although the more esoteric demonstration of natural selection is alone a valuable aspect of the study described, there is a clear ecological implication in the discovery that very old zooplankton eggs have survived in the lake the potential still exists, if and when this environment is restored to something of a more pristine nature, for at least some of the original pre disturbance inhabitants to re establish populations once presumed lost. The genes valuable to survival of those species in a restored environment are still readily available and may be quickly assimilated by the modern populations, perhaps requiring no more than a fortuitous disturbance of the bottom. See also Limnology Paleoecology External links http abcnews.go.com Technology DyeHard story?id 666435&page 1 ABC News article about Resurrection Ecology Biology footer Category Evolutionary biology ... more details
other people Peter Wagner Infobox scientist name Peter J. Wagner image image size caption birth date 27 September 1964 birth place United States death date death place nationality United States ethnicity field Paleontology br Paleobiology work institutions Smithsonian National Museum of Natural History alma mater BS University of Michigan br MS Michigan State University br PhD University of Chicago doctoral students known for author abbrev bot author abbrev zoo influences influenced prizes Charles Schuchert Award 2004 footnotes signature Peter J. Wagner born 27 September 1964 is a paleontologist and curator at the Smithsonian Institution . He received his Ph.D. in Geophysical Sciences from The University of Chicago in 1995 , conducted postdoctoral research at the Smithsonian Institution, and served as a curator at the Field Museum of Natural History from 1996 through 2007. He was given the Charles Schuchert Award of the Paleontological Society in 2004. His research focuses on macroevolution and paleoecology , especially as regards the systematics , evolutionary dynamics, morphology biology morphology , and distribution of Paleozoic Mollusc s. He has published extensively in such journals as Paleobiology journal Paleobiology , Systematic Biology , and Science journal Science and is a contributor to the Paleobiology Database . Bibliography Wagner P. J. 2002. http www.sil.si.edu smithsoniancontributions paleobiology pdf lo SCtP 0088.pdf Phylogenetic relationships of the earliest anisostrophically coiled gastropods . Smithsonian Contributions to Paleobiology, 88 152 pp. External links http paleobiology.si.edu staff individuals wagner.html Smithsonian National Museum of Natural History Biography Persondata Metadata see Wikipedia Persondata . NAME Wagner, Peter J ALTERNATIVE NAMES SHORT DESCRIPTION American paleontologist DATE OF BIRTH 27 September 1964 PLACE OF BIRTH United States DATE OF DEATH PLACE OF DEATH DEFAULTSORT Wagner, Peter J Category 1964 births Category Livi ... more details
Taxobox name Drepanophycales image Asteroxylon fossil.JPG image caption Asteroxylon sp. fossil range Geological range linked late Silurian Devonian regnum Plant ae divisio Lycopodiophyta classis Lycopodiopsida ordo Drepanophycales ordo authority Pichi Sermolli, 1958 subdivision ranks Families subdivision Asteroxylaceae br Drepanophycaceae Drepanophycales is an order of extinct plants of the Division Lycopodiophyta of ?Late Silurian to Late Devonian age around Period span brief Late Silurian Late Devonian 1 , found in North America, China, Russia, Europe, and Australia. Sometimes known as the Asteroxylales or Baragwanathiales. Description Extinct terrestrial vascular plant s of the Silurian to Devonian periods. Stem of the order of several mm to several cm in diameter and several cm to several metres long, erect or arched, dichotomizing occasionally, furnished with true roots at the base. Vascular bundle an exarch stele actinostele , tracheid s of primitive annular or helical type so called G type . Stem clothed in either microphyll s leaves with a single vascular thread or vein , or with leaf like enations unvascularized projections with a vascular trace into the base of each enation. Homosporous, with sporangium sporangia borne singly and dehiscing by a single slit. ref The anatomical details for the genera in the included families are conveniently tabulated by Gensel 1992 tables 2 & 3. ref List of families Drepanophycaceae Kr usel & Weyland stem with microphyll s Asteroxylaceae stem with unvascularized enations Notes reflist References Gensel, P.G. 1992 . Phylogenetic relationships of the zosterophylls and lycopsids evidence from morphology, paleoecology, and cladistic methods of inference. Annals of the Missouri Botanical Garden vol. 79, 450 473. Pichi Sermolli, R.E.G. 1958 . The higher taxa of Pteridophyta and their classification. In Systematics of today . O. Hedberg, ed. . Uppsala Universitets rsskrift 6 70 90. Category prehistoric plants Category Devonian li ... more details
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