Automatic taxobox name Eusuchia fossil range Early Cretaceous Recent, Fossil range 130 0 image Comparison Crocodilia.jpg image caption Three species of living eusuchian Gharial left , American Alligator center , and American Crocodile right . authority Thomas Henry Huxley Huxley , 1875 subdivision ranks Subgroups display children 1 Eusuchia true crocodiles is a clade of Crocodylomorpha crocodylomorph s that first appears in the Early Cretaceous with Hylaeochampsa . ref name benton cite book title Vertebrate Palaeontology author Benton, Michael J. Sibbick, John publisher Blackwell Publishing pages 233 year 2000 isbn 0 632 05614 2 ref All living crocodilian species are eusuchians, as are many extinct forms. Description Unlike primitive crocodylomorphs, crocodyliforms have a secondary bony palate. This feature enables living crocodylians to safely breathe in through their nostrils while the rest of the head including the mouth remains submerged. This structure reaches its greatest elaboration among eusuchians, in whom the internal nares are completely surrounded by the pterygoid bones. Phylogeny Cladogram after Holliday and Gardner, 2012 ref cite journal author Casey M. Holliday and Nicholas M. Gardner year 2012 title A New Eusuchian Crocodyliform with Novel Cranial Integument and Its Significance for the Origin and Evolution of Crocodylia journal PLoS ONE volume 7 issue 1 pages e30471 url http www.plosone.org article info 3Adoi 2F10.1371 2Fjournal.pone.0030471 doi 10.1371 journal.pone.0030471 ref clade style font size 100 line height 85 label1 Eusuchia 1 clade 1 Isisfordia 2 clade 1 Hylaeochampsa 2 clade 1 Aegyptosuchidae label2 Crocodylia 2 clade 1 Borealosuchus 2 Gavialoidea ... ref clade style font size 85 line height 85 label1 Eusuchia 1 clade 1 Isisfordia 2 ... Reflist Category Crocodilians paleo archosaur stub ca Eusuc es Eusuchia fr Eusuchia hu Eusuchia nl Eusuchia ja pl Eusuchia pt Eusuchia ru sv Eusuchia uk zh ... more details
Italic title Taxobox name Eocaiman fossil range Eocene image image width image caption regnum Animal ia phylum Chordate Chordata classis reptile Sauropsida ordo Crocodilia subordo Eusuchia superfamilia Alligatoroidea familia Alligatoridae subfamilia Caimaninae genus extinct Eocaiman genus authority George Gaylord Simpson Simpson , 1933 subdivision ranks Species subdivision E. cavernensis small Simpson, 1933 type species type small Eocaiman is an extinct genus of caiman from the Eocene of Argentina . References The Osteology of the Reptiles page 605 External links http paleodb.org cgi bin bridge.pl?action checkTaxonInfo&taxon no 57016 Eocaiman in the Paleobiology Database portal Paleontology Category Alligatoridae Category Paleogene crocodylomorpha Category Prehistoric reptiles of South America paleo archosaur stub ... more details
Automatic taxobox fossil range Late Cretaceous image Aegisuchus witmeri skull.png image caption Skull of Aegisuchus witmeri authority Kuhn, 1936 display children 2 Aegyptosuchidae is an extinct family biology family of eusuchia n crocodyliform s from the Cretaceous period of Africa. They are characterized by their large size and flat heads. The family includes two genera, Aegyptosuchus and Aegisuchus . ref cite journal author Casey M. Holliday and Nicholas M. Gardner year 2012 title A New Eusuchian Crocodyliform with Novel Cranial Integument and Its Significance for the Origin and Evolution of Crocodylia journal PLoS ONE volume 7 issue 1 pages e30471 url http www.plosone.org article info 3Adoi 2F10.1371 2Fjournal.pone.0030471 doi 10.1371 journal.pone.0030471 ref References Reflist Category Cretaceous crocodylomorpha es Aegyptosuchidae nl Aegyptosuchidae ... more details
Italic title Taxobox name Zhyrasuchus fossil range Late Cretaceous image image width image caption regnum Animal ia phylum Chordata classis Reptile Sauropsida superordo Crocodylomorpha unranked familia ? Eusuchia familia ? Crocodylidae genus Zhyrasuchus genus authority Nesov et al. , 1989 subdivision ranks Species subdivision Z. angustifrons small Nesov et al. , 1989 type species type small Zhyrasuchus is an extinct genus of crocodylomorpha crocodylomorph that may have been a crocodylidae crocodylid eusuchia n, but is only known from scanty material including a frontal bone frontal one of the bones of the roof of the skull . Its fossil s were found in the Coniacian age Upper Cretaceous Bissekty Formation of Dzharakhuduk , Uzbekistan . Zhyrasuchus was described in 1989 by Lev Nesov and colleagues. The type species is Z. angustifrons . A 2000 review by Glenn Storrs and Mikhail Efimov could not determine how Zhyrasuchus and the contemporaneous Tadzhikosuchus were related, or even if they were synonyms, due to the poor fossils available. ref name GSME00 cite book last Storrs first Glenn W. coauthors and Efimov, Mikhail B. editor Benton, Michael J. Shishkin, Mikhail A. Unwin, David M. and Kurochkin, Evgenii N. eds. title The Age of Dinosaurs in Russia and Mongolia year 2000 publisher Cambridge University Press location Cambridge isbn 0 521 55476 X pages 402 419 chapter Mesozoic crocodyliforms of north central Eurasia ref References reflist portal Paleontology Category Prehistoric reptiles of Asia Category Cretaceous crocodylomorpha paleo archosaur stub ... more details
Italic title Taxobox name Tadzhikosuchus fossil range Late Cretaceous image image width image caption regnum Animal ia phylum Chordata classis Reptile Sauropsida superordo Crocodylomorpha unranked familia ? Eusuchia familia ? Crocodylidae genus Tadzhikosuchus genus authority Efimov, 1982 subdivision ranks Species subdivision T. macrodentis small Efimov, 1982 type species type small Tadzhikosuchus is an extinct genus of crocodylomorpha crocodylomorph that may have been a crocodylidae crocodylid eusuchia n. To date it is mostly known from partial dentary dentaries that show it to have been very similar to Diplocynodon , if not the same genus. The two are differentiated by subtle differences in tooth position and tooth socket shape, and by differences in stratigraphy Diplocynodon was a Tertiary genus . Three species have been named the type species T. macrodentis from the lower Santonian age Upper Cretaceous Yalovach Svita of Kansai, Tajikistan Kansai , in the Fergana Valley Fergana Basin of Tajikistan , as described by Efimov in 1982 T. neutralis from the same location, by Efimov in 1988 and T. kizylkumensis from Turonian age rocks of the Upper Cretaceous Bissekty Formation of Dzharakhuduk , Uzbekistan , by Nesov and colleagues in 1989. However, a 2000 review by Glenn Storrs and Mikhail Efimov could not differentiate between the species based on their holotype type material , and recommended using T. macrodentis for the specimens of all three species. They also could not determine how Tadzhikosuchus and the contemporaneous Zhyrasuchus were related, or even if they were synonyms, due to the poor fossils available. ref name GSME00 cite book last Storrs first Glenn W. coauthors and Efimov, Mikhail B. editor Benton, Michael J. Shishkin, Mikhail A. Unwin, David M. and Kurochkin, Evgenii N. eds. title The Age of Dinosaurs in Russia and Mongolia year 2000 publisher Cambridge University Press location Cambridge isbn 0 521 55476 X pages 402 419 chapter Mesozoic crocodyliforms ... more details
Italictitle Taxobox name Planocrania fossil range Paleocene regnum Animal ia phylum Chordate Chordata classis Reptile Sauropsida ordo Crocodilia subordo Eusuchia familia Pristichampsidae genus Planocrania genus authority Li, 1976 in paleontology 1976 subdivision ranks Species subdivision P. datangensis small Li, 1976 type species type small P. hengdongensis small Li, 1984 small Planocrania is an extinct genus of eusuchia n crocodylia n. Planocrania is included in the family biology family Pristichampsidae along with the genus Pristichampsus . Both genera were previously assigned to the subfamily biology subfamily Pristichampsinae within the family Crocodylidae before they were placed in their own family, the Pristichampsidae. ref name BCA01 cite journal last Brochu first C. A. year 2001 title Crocodylian snouts in space and time phylogenetic approaches toward adaptive radiation journal American Zoologist volume 41 issue 3 pages 564 585 doi 10.1668 0003 1569 2001 041 0564 CSISAT 2.0.CO 2 ref Two species are currently known to belong to the genus. The type species , P. datangensis , was named in 1976 from material found from Nanxiong in Guangdong Guangdong Province , China . ref name LJL76 cite journal last Li first J. L. year 1976 title Fossils of Sebecosuchia discovered from Nanxiong, Guangdong journal Vertebrata PalAsiatica volume 14 pages 169 173 ref A second species, P. hengdongensis , is known from Hengdong County in Hunan Hunan Province and was described in 1984. ref name LJL84 cite journal last Li first J. L. year 1984 title A new species of Planocrania from Hengdong, Hunan journal Vertebrata PalAsiatica volume 22 issue 2 pages 123 134 ref References reflist External links http paleodb.org cgi bin bridge.pl?action checkTaxonInfo&taxon no 38455&is real user 1 Planocrania in the Paleobiology Database portal Paleontology Category Crocodilians Category Paleogene crocodylomorpha Category Prehistoric reptiles of Asia paleo archosaur stub es Planocrania ... more details
Italic title Automatic taxobox name Brillanceausuchus fossil range Early Cretaceous authority Michard, de Broin, Brunet & Hell, 1990 in paleontology 1990 subdivision ranks Species subdivision extinct B. babouriensis small Michard, de Broin, Brunet & Hell, 1990 type species type small Brillanceausuchus is an extinct genus of Atoposauridae atoposaurid Crocodylomorpha crocodylomorph . Fossil s have been found in Early Cretaceous age rocks of Cameroon . ref Michard, J., F. de Broin, and M. B. et Joseph Hell 1990 . Le plus ancien crocodilien n osuchien sp cialis caract res eusuchiens du continent Africain Cr tac inf rieur, Cameroun . Comptes Rendus de l Acad mie des Sciences Paris , 311 II . 365 371. ref The genus is notable for the position of the secondary choana within its palate . Parts of the pterygoid bones make up the rostral margin of the choana and thus separate it from the Palatine bone palatines , a feature also seen in the more advanced neosuchia n suborder Eusuchia . ref cite journal doi 10.1098 rspb.2006.3613 last1 Salisbury first1 S. W. last2 Molnar first2 R. E. last3 Frey first3 E. last4 Willis first4 P. M. A. year 2006 title The origin of modern crocodyliforms new evidence from the Cretaceous of Australia url journal Proceedings. Biological sciences the Royal Society volume 273 issue 1600 pages 2439 2448 ref This characteristic was once thought to be characteristic of Eusuchia, but its presence in Brillanceausuchus suggests that the trait is Convergent evolution homoplasic , thus making the evolution of the position of the choana within crocodilians more complex than previously thought. ref cite journal last1 Buscalioni first1 A. D. last2 Ortega first2 F. last3 Weishampel first3 D. B. last4 Jianu first4 C. M. year 2001 title A revision of the Crocodyliform Allodaposuchus precedens from the upper Cretaceous of the Hateg Basin, Romania. Its relevance in the phylogeny of Eusuchia url journal Journal of Vertebrate Paleontology volume 21 issue 1 pages 74 ... more details
Italic title Taxobox name Carandaisuchus fossil range Miocene Pliocene regnum Animal ia phylum Chordate Chordata classis reptile Sauropsida ordo Crocodilia subordo Eusuchia superfamilia Alligatoroidea familia Alligatoridae subfamilia Caimaninae genus Carandaisuchus genus authority Gasparini, 1985 subdivision ranks Species subdivision C. nativus small Gasparini, 1985 type species type small Carandaisuchus is an extinct genus of Caimaninae caiman . Fossil s have been found from the Ituzaing Formation in Argentina . It was unique among crocodilians in having a pronounced bony Occipital bone occipital crest . ref cite journal last1 Langston first1 year 2008 title Notes on a partial skeleton of Mourasuchus Crocodylia, Nettosuchidae from the Upper Miocene of Venezuela url journal Arquivos do Museu Nacional, Rio de Janeiro volume 66 issue 1 pages 125 143 ref The genus has been proposed to be Synonym taxonomy synonymous with Mourasuchus , a strange Nettosuchidae nettosuchid with an unusually long, broad snout. ref cite journal last1 Villanueva first1 J. B. last2 Souza Filho first2 J. P. year 1990 title O crocodiliano sul americano Carandaisuchus como sinon mia de Mourasuchus Nettosuchidae url journal Revista Brasileira de Geoci ncias volume 20 issue pages 230 233 ref References reflist Category Neogene crocodylomorpha Category Prehistoric reptiles of South America paleo archosaur stub ... more details
Taxobox name Helmstedtisuchus fossil range Late Eocene regnum Animal ia phylum Chordate Chordata classis Actinopterygii infraclassis Teleostei ordo Perciformes familia Scombridae genus Helmstedtisuchus genus authority Schleich and Windolf, 1994 subdivision ranks Species subdivision H. freyi small Schleich and Windolf, 1994 type species type small Helmstedtisuchus is an extinct genus of Teleostei teleostean fish . Fossil s have been found from Helmstedt , Germany that are late Eocene in age. ref Schleich, H. H., Vahldiek, B. W., Karl, H. V. and Windolf, R. 1994 . Neue Reptilienfunde aus dem Tertiaer Deutschlands. 14. Beschreibung der fossilen Krokodil und Schildkroetenreste der Helmstedter Mulde Eozaen mit Beitraegen zur Geologie und Palaeontologie. Courier Forschungsinstitut Senckenberg 173 103 135. ref The genus was originally thought to be a eusuchia n Crocodylomorpha crocodylomorph , but it is now known to have been a Scombridae scombrid teleostean fish. ref Rossmann, T. and Klappert, G. 2000 . Studies on Cenozoic Crocodilians and fishes 6. Helmstedtisuchus freyi Schleich & Windolf, 1994 from the Upper Eocene of Helmstedt Germany is not a crocodilian, but a scombrid teleost. Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen 2000 11 651 668. ref References reflist portal Paleontology Category Scombridae Category Prehistoric fish of Europe paleo rayfinned fish stub Perciformes stub ... more details
Automatic taxobox name Mesoeucrocodylia fossil range Sinemurian Recent, Fossil range 199 0 image Notosuchus BW.jpg image width 250px image caption Notosuchus authority Whetstone and Whybrow, 1983 ref name Whetstone & Whybrow, 1983 Whetstone KN, Whybrow PJ. 1983. A cursorial crocodilian from the Triassic of Lesotho Basutoland , southern Africa. Occasional Papers of the Museum of Natural History . The University of Kansas 106 1 37. ref subdivision ranks Clade s subdivision See text. Image Crocodilaemus robustus.JPG thumb left Crocodilaemus Crocodilaemus robustus Mesoeucrocodylia is the name of the clade that includes Eusuchia and the paraphyletic group Mesosuchia . The group appeared during the Early Jurassic , and continues to the present day. It was long known that Mesosuchia was an evolutionary grade , ref name Whetstone & Whybrow, 1983 a hypothesis confirmed by the phylogenetic analysis of Benton and Clark, 1988 which demonstrated that Eusuchia which includes all living crocodylia n species was nested within Mesosuchia. As the authors did not accept paraphyletic groups, Mesoeucrocodylia was erected to replace Mesosuchia. Several anatomical characteristics differentiate Mesoeucrocodylia from the other crocodylomorph clades. The frontal bone s of the skull are fused together into a single compound element, for example. Mesoeucrocodylians possess somewhat of a secondary palate , formed by the posterior extension of Suture anatomy sutured Palatine bone palatine bones. The otic aperture of the members of this clade is blocked posteriorly by the squamosal bone. ref name Clark1994 cite book last Clark first J. M. authorlink title Patterns of evolution in Mesozoic Crocodyliformes In N.C. Fraser and H. D. Sues editors , In the shadow of dinosaurs publisher Cambridge University Press date 1994 location Cambridge pages 84 97 url doi id isbn ref Classification Phylogeny Cladogram after Larsson and Sues 2007 ref name Larsson & Sues, 2007 Larsson HCE, Sues H D. 2007. Cranial os ... more details
italictitle speciesbox name Dolichochampsa fossil range Late Cretaceous , fossil range Maastrichtian genus Dolichochampsa display parents 3 grandparent authority Gasparini & Buffetaut, 1980 in paleontology 1980 parent authority Gasparini & Buffetaut, 1980 authority Gasparini & Buffetaut, 1980 species minima Dolichochampsa is an extinct genus of eusuchia n Crocodylomorpha crocodylomorph . It is the type genus and only member of the family Dolichochampsidae. ref cite journal last1 Gasparini first1 Z last2 Buffetaut first2 E. year 1980 title Dolichochampsa minima , n.g.n.sp., a representative of a new family of eusuchian crocodiles from the Late Cretaceous of northern Argentina url journal Neues Jahrbuch f r Geologie und Pal ontologie Monatshefte volume 1980 issue pages 257 271 ref Fossil s have been found from Argentina and Bolivia of Maastrichtian age. ref cite journal last1 Buffetaut first1 E. year 1987 title Occurrence of the crocodilian Dolichochampsa minima Eusuchia, Dolichochampsidae in the El Molino Formation of Bolivia url journal Bulletin de la Soci t belge de g ologie volume 96 issue 2 pages 195 199 ref It had a distinctive slender snout. ref cite journal doi 10.1668 0003 1569 2001 041 0564 CSISAT 2.0.CO 2 last1 Brochu first1 C. A. year 2001 title Crocodylian snouts in space and time phylogenetic approaches toward adaptive radiation url journal American Zoologist volume 41 issue 3 pages 564 585 ref Because the material associated with the specimens is so fragmentary, its relationships with other eusuchians remain unknown. ref cite journal doi 10.1098 rspb.2006.3613 last1 Salisbury first1 S. W. last2 Molnar first2 R. E. last3 Frey first3 E. last4 Willis first4 P. M. A. year 2006 title The origin of modern crocodyliforms new evidence from the Cretaceous of Australia url journal Proceedings. Biological sciences the Royal Society volume 273 issue 1600 pages 2439 2448 ref References reflist portal paleontology Category Cretaceous crocodylomorpha Category Fossil ... more details
derived clade Eusuchia, which includes living crocodilians. Susisuchus was one of the first .... However, with its naming in 2006, Isisfordia was placed within Eusuchia as the most basal member of the clade, while Susisuchus was placed outside Eusuchia as its sister taxon . Below is a cladogram ... 1 Susisuchus anatoceps label2 Eusuchia 2 clade 1 Isisfordia Isisfordia duncani 2 clade 1 ... more details
, Eusuchia from the Late Cretaceous early Paleogene of New Jersey journal Journal of Vertebrate ... 10.1371 journal.pone.0020011 ref or as a basal eusuchia n not belonging to Crocodylia ref cite journal ... of Eusuchia url http hdl.handle.net 2246 5977 journal Bulletin of the American Museum of Natural ... more details
Automatic taxobox fossil range Late Cretaceous image image width image caption authority Wu and Brinkman, 1993 in paleontology 1993 type species extinct G. palatinus type species authority Wu and Brinkman, 1993 Gilchristosuchus meaning Gilchrist the owners of the ranch where the type specimen was found crocodile is an extinct genus of neosuchia n crocodyliform . ref Crocodyliformes and Neosuchia are clade s that include all living crocodilians and successively smaller subsets of their closest extinct relatives. ref Its fossil s have been found in the upper Milk River Formation of Alberta , Canada , in rocks of either latest Santonian or earliest Campanian age Late Cretaceous . Gilchristosuchus was described in 1993 by Wu and Brinkman. The type species is G. palatinus , in reference to its distinctive palatine bone palatine bones. ref name WB93 cite journal doi 10.1080 02724634.1993.10011497 last Wu first Xiao Chun coauthors and Brinkman, Donald R. year 1993 title A new crocodylomorph of mesosuchian grade from the Upper Cretaceous upper Milk River Formation, southern Alberta journal Journal of Vertebrate Paleontology volume 13 issue 2 pages 153 160 ref Gilchristosuchus is holotype based on Royal Tyrrell Museum of Palaeontology RTMP 91.101.1, a partial anatomical terms of location posterior skull and a neck vertebra . The skull would have been about convert 15 cm in long when complete. It represents the first articulated crocodylomorph specimen from the Milk River Formation. Isolated remains had been found earlier and assigned to Brachychampsa and Leidyosuchus some of these fossils probably belong to Gichristosuchus . Although the specimen is not large, the ornamentation of the skull surfaces and bone fusion indicate it was an adult. Based on previous research, Wu and Brinkman suggested that their new genus was the most derived neosuchian that wasn t within Eusuchia , the group including all living crocodilia ns. ref name WB93 References reflist portal Paleontol ... more details
Italic title Automatic taxobox name Iharkutosuchus fossil range Late Cretaceous authority si et al. , 2007 subdivision ranks Species subdivision I. makadii small si et al. , 2007 type species type small Iharkutosuchus Ihark t crocodile , after where it was found is an extinct genus of basal phylogenetics basal eusuchia n crocodyliform. It fossils have been found in the Santonian age Upper Cretaceous Csehb nya Formation in the Bakony Mountains of western Hungary . It is holotype based on Hungarian Natural History Museum MTM 2006.52.1, a nearly complete skull, and several other partial skulls, isolated skull bones, and numerous teeth are also known. Iharkutosuchus was a small crocodyliform skull length convert 11.1 cm in , estimated body length convert 0.8 m ft . Its skull was low, and the snout was short. Iharkutosuchus is unusual in its heterodont y some of its teeth were complex and cusp dentistry multicusped , like mammal teeth. The structure of the skull indicates that it could grind food with a mobile lower jaw, and together with the teeth suggest a diet of fibrous plant material. The genus was described in 2007 by Attila si and colleagues. The type species is I. makadii , for L szl Mak di. ref name AOetal07 cite journal last si first Attila coauthors Clark, James M. and Weishampel, David B. year 2007 title First report on a new eusuchian crocodyliform with multicusped teeth from the Upper Cretaceous Santonian of Hungary journal Neues Jarbuch f r Geologie und Pal ontologie Abhandlungen volume 243 issue 2 pages 169 177 doi 10.1127 0077 7749 2007 0243 0169 ref References reflist cite journal last si first Attila coauthors and Weishampel, David B. year 2009 title Jaw mechanism and dental function in the Late Cretaceous basal eusuchian Iharkutosuchus journal Journal of Morphology volume 270 issue 8 pages 903 920 doi 10.1002 jmor.10726 pmid 19206154 portal Paleontology Category Crocodilians Category Cretaceous crocodylomorpha Category Prehistoric reptiles ... more details
Italic title Automatic taxobox name Heterosuchus fossil range Early Cretaceous authority Harry Seeley Seeley , 1887 subdivision ranks Species subdivision H. valdensis small Seeley, 1887 type species type small Heterosuchus is an extinct genus of crocodylomorpha crocodylomorph that may have been an eusuchia n. It is known only from neck and back vertebra e recovered from Early Cretaceous age rocks of the Hastings Beds Wealden Group of Hastings , Sussex . These vertebrae are procoelous ball and socket articulation with the socket in front and the ball on the back of individual vertebrae , which is a trait of eusuchians. Heterosuchus was described by Harry Seeley in 1887, with H. valdensis as the type species . It may be the same genus as the slightly younger Hylaeochampsa , inferred to have been of similar evolutionary grade , but there is no overlapping material as Hylaeochampsa is known only from a partial skull Hylaeochampsa would be the name used for both in that case, because it is the older name coined in 1874 . Because of the sparse material and apparent lack of distinguishing characteristics, James Clark and Mark Norell 1992 considered Heterosuchus a nomen dubium dubious name . ref name JCMN92 cite journal last Clark first James M. coauthors and Norell, Mark A. year 1992 title The Early Cretaceous crocodylomorph Hylaeochampsa vectiana from the Wealden of the Isle of Wight journal American Museum Novitates volume 3032 url http digitallibrary.amnh.org dspace bitstream 2246 5002 1 N3032.pdf format pdf ref References reflist portal Paleontology Category Prehistoric reptiles of Europe Category Cretaceous crocodylomorpha paleo archosaur stub pt Heterosuchus ... more details
Italic title Automatic taxobox name Hylaeochampsa fossil range Early Cretaceous authority Richard Owen Owen , 1874 subdivision ranks Species subdivision H. vectiana small Owen, 1874 type species type small Hylaeochampsa is an extinct genus of eusuchia n crocodylomorpha crocodylomorph . It is known only from a partial skull recovered from Barremian age rocks of the Lower Cretaceous Vectis Formation Wealden Group of the Isle of Wight . This skull, Natural History Museum BMNH R 177 , is short and wide, with a eusuchian like palate and inferred enlarged anatomical terms of location posterior teeth that would have been suitable for crushing. Hylaochampsa was described by Richard Owen in 1874, with H. vectiana as the type species . It may be the same genus as the slightly older Heterosuchus , inferred to have been of similar evolutionary grade , but there is no overlapping material as Heterosuchus is known only from vertebra e. If the two could be shown to be synonyms, Hylaeochampsa would have priority because it is the older name. Hylaeochampsa is the type genus of the family Hylaeochampsidae , which also includes Iharkutosuchus from the Late Cretaceous of Hungary . James Clark and Mark Norell positioned it as the cladistics sister group to Crocodylia . ref name JCMN92 cite journal last Clark first James M. coauthors and Norell, Mark A. year 1992 title The Early Cretaceous crocodylomorph Hylaeochampsa vectiana from the Wealden of the Isle of Wight journal American Museum Novitates volume 3032 url http digitallibrary.amnh.org dspace bitstream 2246 5002 1 N3032.pdf format pdf ref Hylaeochampsa is currently the oldest known eusuchian. ref name CAB03 Cite journal last Brochu first Christopher A. title Phylogenetic approaches toward crocodylian history journal Annual Review of Earth and Planetary Science volume 31 pages 357 397 year 2003 doi 10.1146 annurev.earth.31.100901.141308 ref References reflist portal Paleontology Category Prehistoric reptiles of Europe Category Creta ... more details
Italic title Taxobox name Notocaiman fossil range Paleocene regnum Animal ia phylum Chordate Chordata classis Sauropsida ordo Crocodilia Crocodylia superfamilia Alligatoroidea familia Alligatoridae genus Notocaiman genus authority Rusconi, 1937 subdivision ranks Species subdivision N. stromeri small Rusconi, 1937 type species type small Notocaiman is an extinct genus of Alligatoridae alligatorid crocodylia n. A fragmentary and poorly preserved left dentary found from Argentina that presumably dates back to the Paleocene epoch is all that is known from the genus. ref name LW65 cite book last Langston first W. year 1965 title Fossil crocodilians from Colombia and the Cenozoic history of the Crocodilia in South America series University of California Publications in Geological Sciences 52 publisher University of California Press pages 1 152 ref It may be a junior synonym of Eocaiman . ref http www.paleocene mammals.de pal reptiles.htm ref Similarities between the remains of Notocaiman and comparable material from the Alligatoroidea alligatoroid Listrognathosuchus have been observed, but have not been taken as evidence for synonymy. ref name BCA97 cite journal doi 10.1080 02724634.1997.10011017 last Brochu first C. A. year 1997 title A review of Leidyosuchus Crocodyliformes, Eusuchia from the Cretaceous through Eocene of North America journal Journal of Vertebrate Paleontology volume 17 issue 4 pages 679 697 ref The type species , N. stromeri , was named in 1937. ref name RC37 cite journal last Rusconi first C. year 1937 title Nuevo alligatorino del Paleoceno Argentino journal Boletin Paleontologico de Buenos Aires volume 8 pages 1 5 ref References reflist portal Paleontology Category Alligatoridae Category Paleogene crocodylomorpha Category Prehistoric reptiles of South America paleo archosaur stub ... more details
Wuetal01 Wu et al. . noted that their new genus was not an eusuchia n because of the form of the palatal ... phylogenetic analysis by Turner and Buckley 2008 places it with the Glen Rose Form in a clade with Eusuchia ... more details
Eusuchia true crocodilies which includes crown group Crocodylia Mesosuchia middle crocodiles Thalattosuchia ... 2 clade 1 Sarcosuchus 2 Terminonaris 3 clade 1 Goniopholididae 2 clade 1 Bernissartia 2 Eusuchia The previous definitions of Crocodilia and Eusuchia do not accurately resemble the evolution of the group ... more details
Eusuchia Below is a cladogram showing the phylogenetic relationships of neosuchians from Buscalioni ..., R. Signore, M. and Barbera, C. year 2011 title Early eusuchia crocodylomorpha from the vertebrate ... 1 Susisuchus anatoceps 2 clade 1 Las Hoyas neosuchian label2 Eusuchia 2 clade 1 Isisfordia duncani ... more details
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