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Paralligatoridae
Paralligatoridae is an extinct family of neosuchian crocodyliforms that existed during the Jurassic and Cretaceous periods. It includes the genera '' Paralligator'', '' Brillanceausuchus'', '' Kansajsuchus'', '' Shamosuchus'', '' Scolomastax'', '' Sabresuchus'', '' Rugosuchus'', '' Batrachomimus'' and '' Wannchampsus'', as well as the yet-unnamed "Glen Rose form". Evolution Phylogenetic analyses of crocodyliforms find Paralligatoridae to nest within Neosuchia, a large clade (evolutionary grouping) that also includes modern crocodylians. In crocodyliform phylogeny, paralligatorids are usually found near the base of Neosuchia, outside the clade Eusuchia, which includes crocodylians and their closest relatives. Below is a cladogram A cladogram (from Greek language, Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an Phylogenetic tree, evolutionary tree because it does not s . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Batrachomimus
''Batrachomimus'' is an extinct genus of neosuchian crocodyliform known from the Late Jurassic Pastos Bons Formation of northeastern Brazil. It contains a single species, ''Batrachomimus pastosbonensis'', with the specific name referring to the formation, which was first described and named by Felipe C. Montefeltro, Hans C. E. Larsson, Marco A. G. de França and Max C. Langer in 2013. It is known from a nearly complete skull, osteoderms and limb bones. ''Batrachomimus'' belongs to the family Paralligatoridae and predates all other members of the family and its immediate sister group, Eusuchia, by 30 million years. Description ''Batrachomimus'' is known from a single holotype skull known as LPRP/USP-0617, which preserves most of the skull and lower jaws except for the skull table, braincase, and the left temporal region. The skull is about , giving an estimated total body length of about . ''Batrachomimus'' has a narrow snout with wavy margins around the teeth. It is unique in hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Tarsomordeo
''Tarsomordeo'' is an extinct genus of paralligatorid neosuchian known from the Early Cretaceous Twin Mountains Formation in Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we .... It contains a single species, ''T. winkleri.'' References {{Taxonbar, from=Q109558093 Paralligatoridae Aptian life Early Cretaceous crocodylomorphs of North America Fossil taxa described in 2019 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Kansajsuchus
''Kansajsuchus'' is an extinct genus of paralligatorid mesoeucrocodylian. It is based on PIN 2399/301, a right premaxilla, one of the bones of the tip of the snout. This specimen was found in rocks of the lower Santonian-age Upper Cretaceous Yalovach Svita of Kansai, in the Fergana Basin of Tajikistan. Additional fossils including vertebrae and bony armor have been assigned to this genus. It would have been a large animal, estimated at between long. ''Kansajsuchus'' was described in 1975 by Mikhail Efimov. The type species is ''Kansajsuchus extensus''. Classification Halliday ''et al.'' (2013) confirmed the validity of the species ''K. extensus'', and its phylogenetic position among other basal goniopholidids from Asia. '' "Sunosuchus" shartegensis'' was found to represent its sister taxon, and both species were placed in a distinct lineage from the type species of ''Sunosuchus'', '' S. miaoi'', however with a weak support. Therefore, the authors raised the suggest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Yanjisuchus
''Yanjisuchus'' is an extinct genus of paralligatorid neosuchian known from the Early Cretaceous Longjing Formation of Jilin, China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after .... It contains a single species, ''Y. longshanensis.'' References Paralligatoridae Early Cretaceous crocodylomorphs of Asia Fossil taxa described in 2022 {{Paleo-archosaur-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Eusuchia
Eusuchia is a clade of neosuchian Crocodylomorpha, crocodylomorphs that first appeared in the Early Cretaceous, which includes modern Crocodilia, crocodilians. Along with Dyrosauridae and Sebecosuchia, they were the only crocodyliformes who survived the Cretaceous–Paleogene extinction event, K-Pg extinction. Definition Eusuchia was originally defined by Thomas Henry Huxley in 1875 as an apomorphy-based group, meaning that it was defined by shared characteristics rather than relations. These characteristics include pterygoid-bounded choanae and vertebrae which are procoelous (concave from the front and convex from the back). The possibility that these traits may have been Convergent evolution, convergently evolved in different groups of neosuchians rather than one lineage spurred some modern paleontologists to revise the group's definition to make it defined solely by relations. In 1999, Christopher Brochu redefined Eusuchia as "the last common ancestor of ''Hylaeochampsa'' and C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Scolomastax
''Scolomastax'' is an extinct genus of paralligatorid neosuchian known from the Late Cretaceous Woodbine Formation in Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we .... It contains a single species, ''S. sahlsteini''. References {{Neosuchia, N. Paralligatoridae Cenomanian life Late Cretaceous crocodylomorphs of North America Fossil taxa described in 2019 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Shamosuchus
''Shamosuchus'' is an extinct genus of neosuchian crocodyliform Crocodyliformes is a clade of Crurotarsi, crurotarsan archosaurs, the group often traditionally referred to as "crocodilians". They are the first members of Crocodylomorpha to possess many of the features that define later relatives. They are the ... that lived during the Late Cretaceous (Campanian) period in what is now the Djadochta Formation of Mongolia, approximately 75 million to 71 million years ago. Paleobiology ''Shamosuchus'' reached up to 4 m long and had a rostrum of moderate length. The eye and nasal openings were not raised above the skull as in modern crocodilians, so that the animal would have to raise its head completely out of the water to breathe. As this cranial morphology does not suit an ambush predator, it lends support to the idea of a diet of aquatic invertebrates. The teeth were adapted to crush bivalves, gastropods, and other animals with a shell or exoskeleton. The genus was named in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Theriosuchus
''Theriosuchus'' is an extinct genus of atoposaurid neosuchian from Late Jurassic to Early Cretaceous of Europe (Hungary & southern England), Southeast Asia (Thailand) and western North America (Wyoming), with fragmentary records from Middle Jurassic and Early Cretaceous sites in China, Morocco, and Scotland. Taxonomy Three valid species are currently recognized: ''Theriosuchus pusillus'' from southern England, ''T. grandinaris'' from Thailand, and ''T. morrisonensis'' from the Morrison Formation of North America. ''Theriosuchus'' was previously assigned to Atoposauridae, but a 2016 cladistic analysis recovered it as a neosuchian more closely related to members of the family Paralligatoridae than to atoposaurids. Two species previously assigned to this genus, ''Theriosuchus ibericus'' and ''T. symplesiodon'', have been reassigned to the new genus '' Sabresuchus''. On the other hand, ''Theriosuchus guimarotae'' from Portugal has been reassigned to ''Knoetschkesuchus ''Knoe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Neosuchia
Neosuchia is a clade within Mesoeucrocodylia that includes all modern extant crocodilians and their closest fossil relatives. It is defined as the most inclusive clade containing all Crocodylomorpha, crocodylomorphs more closely related to ''Crocodylus niloticus'' (the Nile Crocodile) than to ''Notosuchus terrestris''. Members of Neosuchia generally share a crocodilian-like bodyform adapted to freshwater aquatic life, as opposed to the terrestrial habits of more basal crocodylomorph groups. The earliest neosuchian is suggested to be the Early Jurassic ''Calsoyasuchus'', which lived during the Sinemurian and Pliensbachian stages in North America. It is often identified as a member of Goniopholididae, though this is disputed, and the taxon may lie outside Neosuchia, which places the earliest records of the group in the Middle Jurassic. Characteristics Members of Neosuchia have a wide diversity of skull shapes. Several groups convergently evolved elongate gharial-like skulls, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Wannchampsus
''Wannchampsus'' (" Wann Langston, Jr.'s crocodile") is an extinct genus of paralligatorid neosuchian, close to but not a true crocodilian. It is known from fossils discovered in Lower Cretaceous rocks in north-central Texas, United States. Description and classification ''Wannchampsus'' is based on SMU 76604, a partial skull and lower jaw. This fossil is attached by matrix to another partial skull of the same genus and species, SMU 76605. A handful of other fossils were found associated, mostly representing forelimbs and vertebrae. These fossils were found in rocks of the late Aptian-age Lower Cretaceous Twin Mountains Formation, southwest of Stephenville, in Comanche County, Texas; the site is otherwise known as the Proctor Lake dinosaur locality. ''Wannchampsus'' was described in 2014 by Thomas Adams. The type species is ''W. kirpachi'', in honor of Wesley Kirpach, "who was instrumental in the discovery and excavations of the type specimen". The skulls are de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Sabresuchus
''Sabresuchus'' is an extinct genus of neosuchian crocodyliform from the Cretaceous of Europe. The name is derived from 'Sabre' in reference to the enlarged and curved fifth maxillary tooth, and 'suchus' from the Ancient Greek for crocodile. Taxonomy Two valid species are currently recognized: ''Sabresuchus ibericus'' from eastern Spain, and ''Sabresuchus sympiestodon'' from Romania,. Both species were previously assigned under the genus ''Theriosuchus'', as ''T. ibericus'' and ''T. sympiestodon'' respectively. A 2016 cladistic analysis recovered it as a neosuchian more closely related to members of the family Paralligatoridae Paralligatoridae is an extinct family of neosuchian crocodyliforms that existed during the Jurassic and Cretaceous periods. It includes the genera '' Paralligator'', '' Brillanceausuchus'', '' Kansajsuchus'', '' Shamosuchus'', '' Scolomastax'', ... than to atoposaurids. References Neosuchia Crocodyliformes Cretaceous Romania Fossils of Roma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
