The Devonian is a geologic period geologic period and system of the Paleozoic Era spanning from the end ... from this period were first studied. The Devonian period experienced the first significant adaptive ... s which covered the continents. By the middle of the Devonian several groups of plants had evolved ... this time, leading the Devonian to often be dubbed the Age of Fish . The first Actinopterygii ray ... coral reef s, were still common. The Late Devonian extinction severely affected marine ... Devonian outcrops are common. While the stratum rock bed s that define the start and end of the period ... References Ogg, 2004 , the Devonian extends from the end of the Silurian Period 416.0 ... of the Mississippian subperiod of the Carboniferous ICS 2004 . In nineteenth century texts the Devonian ..., Dittonian, Breconian and Farlovian stages, the latter three of which are placed in the Devonian. ref ... edn. Memoir of the British Geological Survey Sheet 232 Eng & Wales pp18 19 ref The Devonian has also erroneously been characterized as a greenhouse age , due to sampling bias most of the early Devonian ... the climate in the Devonian differed greatly between Geologic time scale epoch s and geographic regions. For example, during the Early Devonian , arid conditions were prevalent through much of the world ... climate . In the Late Devonian , by contrast, arid conditions were less prevalent across the world and temperate climates were more common. Subdivisions anchor subdivisions include timeline The Devonian ... parts of the Devonian System. The Early Devonian lasts from period span Early devonian and begins with the Lochkovian ... by the Emsian, which lasts until the Middle Devonian begins, ma middle devonian error show . The Middle Devonian comprises two subdivisions, the Eifelian giving way to the Givetian Mya Givetian ..., warm, oxygen depleted waters of Devonian inland lakes, surrounded by primitive plants, provided .... Finally, the Late Devonian starts with the Frasnian, period span Frasnian , during which the first ... more details
Devonian Gardens can refer to Devonian Botanical Garden , a botanical garden near Devon, Alberta, Canada Devonian Gardens Calgary , an urban park in Calgary, Alberta, Canada disambig ... more details
is open from May through October. The Friends of the Devonian Botanic Garden was founded in 1971 ... to develop an Islamic Garden within the grounds of the Devonian Botanic Garden. This request has been accepted and preliminary work has begun. gallery Caption Photographs of Devonian Botanic Garden Image Japanese Garden Devonian Botanic Garden Edmonton Alberta Canada 22B.jpg Bell in the Japanese Garden Image Japanese Garden Devonian Botanic Garden Edmonton Alberta Canada 15A.jpg Viewing spot in the Japanese Garden Image Japanese Garden Devonian Botanic Garden Edmonton Alberta Canada 31A.jpg Pond ... links Commons category Devonian Botanical Garden http www.ales.ualberta.ca devonian Univ. of Alberta Devonian Botanic Garden Alberta parks Coord 53.4081 113.7568 type landmark region CA display title ... more details
About the indoor park in Calgary the botanical garden near Devon, Alberta Devon Devonian Botanical Garden Infobox park name Devonian Gardens photo DevonianGardens Calgary waterfall.JPG photo width 230 photo alt photo caption Waterfall in Devonian Gardens type Urban park location Downtown Calgary coords Coord 51.04614 114.07161 type landmark display inline,title area convert 2.5 acre m2 created Start date 1977 operator City of Calgary visitation num status Under renovation open website http www.calgary.ca portal server.pt gateway PTARGS 0 0 395 203 0 47 http 3B content.calgary.ca CCA City Hall Business Units Parks Find a Park or Pathway Major Parks Downtown Parks Devonian Gardens.htm Devonian Gardens map Calgary street map.png map width 200 map alt map caption Location in Calgary x 580 y 555 Devonian Gardens is a large indoor park and botanical garden located in the Downtown Calgary downtown core of Calgary , Alberta , Canada . The park is currently closed for a major 23.5 million renovation ref http www.calgaryherald.com news Devonian Gardens Phase approved 3040211 story.html ref as of August ... Parks. History Image DevonianGardens 9.jpg left thumb 150px The original Devonian Gardens Opening in 1977, Devonian Gardens was designed by J.H. Cook Architects and Engineers and donated to the City of Calgary by the Devonian Group of Charitable Foundations and Calford Properties. The construction ... plants ref http www.calgaryattractions.com devonian.html Calgary Attractions Devonian Gardens ... so that the risk of loss is minimized. See also commons Devonian Gardens Calgary Devonian ... CCA City Hall Business Units Parks Find a Park or Pathway Major Parks Downtown Parks Devonian Gardens.htm Devonian Gardens City of Calgary. http www.calgary.ca portal server.pt gateway PTARGS 0 2 547848 0 0 18 Devonian Gardens.htm Civic Art Collection Devonian Gardens Calgary landmarks Alberta parks ... of Calgary Category Parks in Calgary Category Visitor attractions in Calgary pt Jardins de Devonian ... more details
The Great Devonian Controversy began in 1834 when Roderick Murchison disagreed with Henry De La Beche as to the dating of certain petrified plants found in coals in the Greywacke strata in North Devon , England . De La Beche was claiming that since Carboniferous fossils were found deep in the Greywacke strata, which itself was older than Carboniferous period, this method of dating rocks was not viable. Murchison, on the other hand, claimed that De La Beche did not place the fossils correctly, as they were occurring quite near the top of the strata as opposed to deep within it. De La Beche soon agreed with Murchison s argument as to the placing of fossils but maintained that since a layer of Old Red Sandstone, present in other formations, was missing between the layer of older rock and this new formation, there was still insufficient evidence to suggest the formation was not part of the older Silurian strata. There followed much debate and some extensive investigations which ranged as far as Russia, where in 1840 Murchison discovered a layer similar to the one found in Devon placed between well defined Silurian and Carboniferous deposits. This discovery put an end to the Controversy and lead to a definition of a new period called Devonian . Further reading Rudwick, Martin J. S. The Great Devonian Controversy The Shaping of Scientific Knowledge among Gentlemanly Specialists . Chicago, University of Chicago Press. 1985. DEFAULTSORT Great Devonian Controversy geology stub Category Scientific controversies Category Geology of England Category Geology of Devon ... more details
annotated image Extinction caption Comparison of the three episodes of extinction in the Late Devonian ... intensity, calculated from marine genus genera . The Late Devonian extinction was one of five major ... Event, occurred at the boundary that marks the beginning of the last phase of the Devonian ... ref A second, distinct mass extinction, the Hangenberg Event , closed the Devonian period ref Caplan ... Devonian, the extent of time during which these events took place is uncertain, with estimates ... gsa 2003AM finalprogram abstract 61972.htm Racki, Grzegorz, Toward understanding of Late Devonian ... 391, Encyclopedia of Global Environmental Change John Wiley & Sons. ref By the late Devonian, the land ... name Sallan and Coates, 2010 Sallan and Coates, 2010 ref The Late Devonian world include timeline Devonian During the Late Devonian, the continents were arranged differently, with a supercontinent, Gondwana ... period lasting the last 20 25 million years of the Devonian. During this period, about eight ... Devonian spread of vascular land plants on weathering regimes, marine biota, and global climate ... climates based on palynomorph analyses and the question of the Late Devonian glaciations journal Earth ... void of terrestrial animal fossils, likely related to losses during the end Devonian Hangenberg ... pulse that occurs near the Frasnian Famennian boundary. Most references to the Late Devonian ... below the Devonian Carboniferous boundary and marks the last spike in the period of extinction ... reef rocks to hold oil, has led to Devonian rocks being an important source of oil, especially in the USA. Anoxic conditions in the sea bed of late Devonian ocean basins produced some oil shales. Biological impact The Kellwasser event and most other Later Devonian pulses primarily affected the marine ... important group to be affected by the Kellwasser event were the reef builders of the great Devonian ... of the later Devonian were dominated by sponges and calcifying bacteria, producing structures such as oncolite ... more details
any Devonian marine site. These types are named for their slender, branch like shape and how they grow ... fascinating fossils found in Devonian Michigan deposits. Crinoids are filter feeding echinoderms that evolved in the Silurian period , they were extremely common during the Devonian Period.They grew ... as a defense against predators. Corals Corals were the most common animals found in Devonian Michigan. There were three types of coral found in Devonian Michigan branching, colony, and solitary ... the Devonian was a time of great reef s, which covered most of the world s oceans. Corals were a crucial element for these reefs, especially the solitary or horn corals. The extinction at the end of the Devonian ... . Solitary are the types of corals that grew as an isolated individual were extremely common in Devonian ... reef builders of the Devonian, and was a crucial part of theses ancient reefs. Colony or Tabulate ... of corals found in Devonian Michigan deposits. They are usually small, and are found growing on brachiopods ... in Michigan s Devonian deposits. Usually all that is found are pieces of the shell, but it is possible ... for gastropods in Michigan is Burkholder Road ditch. Fish The Devonian period is correctly called the age ... extinct at the end of the Devonian period that also claimed the Placoderms and most other jaw less fish. Sharks Sharks first appeared in the mid Devonian period, and are extremely rare to find anywhere ... be found from Devonian deposits in the Lower Peninsula, and Stromatolites in the Upper Peninsula ... creatures that were quite common in the Devonian Period, in fact, these creatures were the dominant ..., some reaching the size of telephone poles. By the Devonian they had grown smaller, although they were ... went extinct in the Cretaceous Paleogene extinction event . They first evolved in the Devonian ... experienced a rapid decline during the Devonian period now only snacks to a host of well evolved ... Stack http web.me.com michaelstack1 Michigan Fossil Hunting Michigan Fossil Hunting.html Category Devonian ... more details
Unreferenced date July 2008 Taxobox name Mesacanthus image Mesacanthus.jpg fossil range Early Devonian regnum Animal ia phylum Chordata classis Acanthodii genus Mesacanthus Mesacanthus middle spine is an extinct genus of acanthodian fish from early Devonian Scotland . It is among the more primitive of the early Devonian acanthodians. See also List of acanthodians Category Acanthodii Category Devonian fish paleo fish stub ... more details
Minicrania was a genus of tiny antiarchi antiarch fish, about 2 cm, which lived during the Early Devonian period of China . Category Placoderms Category Devonian fish Category Prehistoric fish of Asia Placoderm stub ... more details
Taxobox name Psammosteidae status fossil image Drepanaspis gemuendina.jpg image caption Drepanaspis gemuendina and Tiaraspis subtilis fossil range fossilrange 416 359 Early to Late Devonian regnum Animal ia classis Agnatha ordo Heterostraci familia Psammosteidae subdivision ranks Genera subdivision Drepanaspis Pycnosteus Psammolepis Schizosteus Tartuosteus The Psammosteidae are a family of flattened, benthic jawless vertebrate s that lived in Marine ocean marine and estuary environments in Europe, Russia & North America. They arose during the Early Devonian , with the first and best known genus, Drepanaspis from the Hunsr ck lagerst tte . The Psammosteids were the only heterostracans that survived the Upper Frasnian extinction event during the Late Devonian , dying out in the extinction event at the very end of the Devonian. Many of the Late Devonian genera, such as Psammolepis , were among the largest heterostracans ever, growing to be at least 1.5 metres in width. References http www.palaeos.com Vertebrates Units 040Pteraspidomorphi 040.800.html Psammosteida Palaeos Vertebrates paleo fish stub Category Devonian fish Category Devonian extinctions Category Heterostraci de Psammosteidae ... more details
Automatic taxobox fossil range Late Devonian genus authority Zhu et al., 2002 type species S. pani type species authority Zhu et al., 2002 Sinostega is an extinct genus of early tetrapod from the Late Devonian of China . The fossil was discovered in the Ningxia Hui Autonomous Region, northwest China, and consist of a fragmentary lower jawbone measuring 7 cm in length. It is the first Devonian tetrapod to be found in Asia . References Zhu, M., Ahlberg, P. E., Zhao, W., and Jia, L.. 2002. First Devonian tetrapod from Asia. Nature 420 760. External links http news.nationalgeographic.com news 2002 12 1218 021218 tetrapod.html http english.cas.ac.cn Eng2003 page SRA D 3.htm Category Tetrapods Category Prehistoric vertebrates Category Devonian animals Category Prehistoric animals of Asia paleo stub ca Sinostega pani ... more details
Taxobox name Luckeus fossil range Early Devonian to Middle Devonian image image width 250px image caption regnum Animal ia phylum Chordate Chordata subphylum Vertebrate Vertebrata infraphylum Gnathostomata classis Sarcopterygii ordo Onychodontida familia Onychodontidae genus Luckeus species L. abudda binomial Luckeus abudda binomial authority Young & Schultze, 2005 portal Paleontology Luckeus was an Onychodontida onychodontid fish which lived during the Early Devonian to Middle Devonian period Emsian Eifelian in central Australia . Onychodontidae Category Prehistoric fish Category Onychodontida Category Lobe finned fish Category Devonian fish paleo bony fish stub ... more details
italictitle Taxobox name Thysanopeltis fossil range Early Devonian Early Middle Devonian regnum Animal ia phylum Arthropod a classis Trilobita ordo Corynexochida genus Thysanopeltis genus authority subdivision ranks Species subdivision Thysanopeltis is a genus of trilobite that lived from the Early Devonian Early to the Middle Devonian . Its remains have been found in Africa and Europe . Sources Trilobite Eyewitness to Evolution , by Richard Fortey Trilobites , by Riccardo Levi Setti External links http paleodb.org cgi bin bridge.pl?action checkTaxonInfo&taxon no 19704 Thysanopeltis in the Paleobiology Database portal Paleontology Category Trilobites Category Devonian trilobites Category Prehistoric animals of Africa Category Prehistoric animals of Europe trilobite stub pl Thysanopeltis ... more details
Taxobox name Melanognathus fossil range Devonian regnum Animal ia phylum Chordate Chordata subphylum Vertebrate Vertebrata classis Sarcopterygii subclassis Dipnoi ordo Uranolophina familia Uranolophidae genus Melanognathus species M. canadensis binomial Melanognathus canadensis portal paleontology Melanognathus is a prehistoric lungfish which lived during the Devonian geological period period ref SCHULTZE H.P. 2001 . MELANOGNATHUS , A PRIMITIVE DIPNOAN FROM THE LOWER DEVONIAN OF THE CANADIAN ARCTIC AND THE INTERRELATIONSHIPS OF DEVONIAN DIPNOANS. Journal of Vertebrate Paleontology Vol. 21, No. 4 pp. 781 794 ref . References Reflist Category Prehistoric bony fish Category Prehistoric fish Category Lobe finned fish Category Lungfish Category Devonian fish paleo bony fish stub ... more details
Automatic taxobox fossil range Late Devonian authority Lebedev, 2004 in paleontology 2004 type species extinct J. livnensis type species authority Lebedev, 2004 Jakubsonia is an extinct genus of early tetrapod from the Late Devonian of Russia . The type species , Jakubsonia livnensis , was named in 2004. ref name LOL04 cite journal last Lebedev first O.L. year 2004 title A new tetrapod Jakubsonia livnensis from the Early Famennian Devonian of Russia and palaeoecological remarks on the Late Devonian tetrapod habitats journal Acta Universitatis Tatviensis volume 679 pages 79 98 ref References reflist Category Tetrapods Category Devonian animals ... more details
Taxobox name Marsupiocrinus fossil range Silurian Early Devonian regnum Animal ia phylum Echinodermata classis Crinoidea ordo Monobathrida genus Marsupiocrinus Marsupiocrinus is an extinct genus of crinoid that lived from the Silurian to the Early Devonian in North America . External links http paleodb.org cgi bin bridge.pl?action checkTaxonInfo&taxon no 31795 Marsupiocrinus in the Paleobiology Database Category Crinoidea Category Prehistoric invertebrates Category Silurian animals Category Devonian animals Category Prehistoric animals of North America paleo echinoderm stub ... more details
orphan date April 2008 Taxobox name Palastericus image image width image caption fossil range Devonian regnum Animal ia phylum Echinodermata subphylum Asterozoa classis Asteroidea genus Palastericus subdivision ranks Species subdivision Palastericus is an extinct genus of sea star from the Devonian . Sources Fossils Smithsonian Handbooks by David Ward Page 186 Category Asteroidea Category Devonian animals paleo echinoderm stub ... more details
Taxobox name Rhamphodopsis fossil range Late Devonian image Rhamphodopsis threiplandi.jpg regnum Animal ia phylum Chordata classis Placodermi ordo Ptyctodontida genus Rhamphodopsis Rhamphodopsis is an extinct genus of ptyctodont placoderm from the Late Devonian of Europe . species Rhamphodopsis threiplandi Sources Fossils Smithsonian Handbooks by David Ward Page 197 Category Placoderms Category Devonian fish Category Prehistoric fish of Europe Placoderm stub ... more details
Taxobox name Powichthys fossil range Devonian regnum Animal ia phylum Chordata classis Sarcopterygii ordo Coelacanthiformes genus Powichthys species P. spitsbergensis binomial Powichthys spitsbergensis portal Paleontology Powichthys is a genus of prehistoric lobe finned fish which lived during the Devonian period. This fish it was small in size, about 30 cm. Category Prehistoric fish Category Devonian fish Category Lobe finned fish paleo bony fish stub ... more details
Taxobox name Koharalepis fossil range Devonian regnum Animal ia phylum Chordate Chordata subphylum Vertebrate Vertebrata classis Sarcopterygii familia Canowindridae genus Koharalepis portal Paleontology Koharalepis is a prehistoric lobe finned fish which lived during the Devonian Geological period period . Osteolepiforms Category Prehistoric fish Category Osteolepiformes Category Devonian fish paleo bony fish stub ... more details
Distinguish Jarvikina Taxobox name Jarvikia fossil range Devonian regnum Animal ia phylum Chordate Chordata subphylum Vertebrate Vertebrata classis Sarcopterygii subclassis Dipnoi genus Jarvikia portal Paleontology Jarvikia is a genus of prehistoric lungfish which lived during the Devonian geological period period . Category Prehistoric bony fish Category Prehistoric fish Category Lungfish Category Devonian fish paleo bony fish stub ... more details
Taxobox name Fleurantia fossil range Devonian regnum Animal ia phylum Chordate Chordata subphylum Vertebrate Vertebrata classis Sarcopterygii subclassis Dipnoi familia Fleurantiidae genus Fleurantia species F. denticulata binomial Fleurantia denticulata portal Paleontology Fleurantia is a genus of prehistoric lungfish which lived during the Devonian geological period period . Fossils have been found in North America . Category Prehistoric fish Category Lobe finned fish Category Devonian fish paleo bony fish stub ... more details
Taxobox name Amadeodipterus fossil range Devonian regnum Animal ia phylum Chordata classis Sarcopterygii subclassis Dipnoi familia Dipteridae genus Amadeodipterus species A. kencampbelli binomial Amadeodipterus kencampbelli binomial authority Young & Schultze, 2005 portal Paleontology Amadeodipterus is an extinct genus of lungfish which lived during the Devonian period . Fossils have been found in Central Australia . Category Prehistoric fish Category Prehistoric bony fish Category Lungfish Category Devonian fish paleo bony fish stub ... more details
Taxobox name Andreyeichthys fossil range Devonian regnum Animal ia phylum Chordata classis Sarcopterygii subclassis Dipnoi familia Phaneropleuridae genus Andreyeichthys species A. epitomus binomial Andreyeichthys epitomus binomial authority Krupina, 1987 portal Paleontology Andreyeichthys is an extinct genus of lungfish which lived during the Devonian period . Category Prehistoric fish Category Prehistoric bony fish Category Lungfish Category Devonian fish paleo bony fish stub ... more details
Taxobox name Barwickia fossil range Devonian regnum Animal ia phylum Chordate Chordata subphylum Vertebrate Vertebrata classis Sarcopterygii subclassis Dipnoi familia Fleurantiidae genus Barwickia species B. downunda binomial Barwickia downunda portal Paleontology Barwickia is a genus of prehistoric lungfish which lived during the Devonian geological period period . Fossils have been found in Victoria, Australia Victoria , Australia . Category Prehistoric fish Category Lungfish Category Devonian fish paleo bony fish stub ... more details
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