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Rauisuchids
Rauisuchidae is a group of large (up to ) predatory Triassic archosaurs. Some disagreement exists over which genera should be included in the Rauisuchidae and which should be in the related Prestosuchidae and Poposauridae, and indeed whether these should even be thought of as separate valid Family (biology), families. Rauisuchidae in the modern sense was defined by Sterling Nesbitt in 2011 as the most inclusive clade containing ''Rauisuchus tiradentes'', but not ''Prestosuchus chiniquensis'', ''Poposaurus gracilis'', or ''Crocodylus niloticus'' (the Nile crocodile). In this modern sense, rauisuchids are recovered as members of the clade Loricata, being the sister taxon of Crocodylomorpha (the group including living crocodilians), and being more derived than taxa such as ''Prestosuchus'' and ''Batrachotomus''. Rauisuchids occurred throughout much of the Triassic, and may have first occurred in the Early Triassic if some archosaurian taxa such as ''Scythosuchus'' and ''Tsylmosuchus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rauisuchus
''Rauisuchus'' (meaning "Wilhelm Rau's crocodile") is a genus of extinct archosaurs which lived in what is now the Geopark of Paleorrota (Santa María Formation), Brazil, during the Triassic, Late Triassic period (235–228 million years ago). It contains one species, ''R. tiradentes''.''Rauisuchus'' at Fossilworks.orgF. v. Huene. (1942) ''Die fossilen Reptilien des südamerikanischen Gondwanalandes. Ergebnisse der Sauriergrabung in Südbrasilien 1928/29.'' München: C.H. Beck'sche Verlagsbuchhandlung Discovery and naming In 1928 or 1929, near the road from Santa Maria, Rio Grande do Sul, Santa Maria to São José, Santa Catarina, San Jose, Dr. Wilhelm Rau, a German fossil collector working under Friedrich von Huene, discovered the remains of a Rauisuchidae, rauisuch ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teratosaurus
''Teratosaurus'' is a genus of rauisuchians known from the Triassic Stubensandstein ( Löwenstein Formation - Norian stage) of Germany. It is estimated to be 6.2 meters (20.35 ft) long. Discovery In 1860, Sixt Friedrich Jakob von Kapff at the ''Heslacher Wand'' near Stuttgart discovered the upper jaw bone of a large reptile. The type specimen, which Hermann von Meyer declared to be distinct from '' Belodon'', was described and named by the latter as the type species ''Teratosaurus suevicus''. The generic name is derived from Greek τέρας, ''teras'', " minous birth of amonster" and ''sauros'', "lizard". The specific name refers to Suevia. The holotype, specimen NHMUK PV OR 38646, was found in the Mittlerer Stubensandstein. It consists of a 245 millimetres long right maxilla with six large, up to five centimetres long, teeth, erroneously interpreted by Meyer as the left maxilla. It indicates a body length of about six metres. Later authors, such as Kapff himself, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jushatyria
''Jushatyria'' is an extinct genus of archosaur. Fossils have been found in the Koltaevo III Locality, district of Kumertau near the Ural Mountains in European Russia from the Bukobay Gorizont. The locality dates back to the Ladinian stage of the Middle Triassic. Additional material has been described from a locality on the banks of the Berdyanka River that was previously assigned to a rauisuchid-like archosaur. However, this material differed from the original specimens because it lacked slit-like antorbital openings accompanying the antorbital fossa. Nesbitt (2009) and Gower and Sennikov (2000) suggested that all material currently referred to ''Jushatyria'' most likely does not represent a single taxon.Gower, D. J. and Sennikov, A. G. (2000). Early Archosaurs from Russia ''In:'' Benton, M. J., Kurochkin, E. N., Shishkin, M. A. and Unwin, D. M., eds., ''The Age of Dinosaurs in Russia and Mongolia''. Cambridge, Cambridge University Press; pp. 140–159. Thus, ''Jushatyria'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tikisuchus
''Tikisuchus'' is an extinct genus of rauisuchid archosauromorph. It is known from the Late Triassic Tiki Formation in the Shahdol District of central India and was the first rauisuchid to have been found in Asia. The horizon from which remains have been found is Carnian in age. The type species is ''T. romeri'', named in honor of American paleontologist Alfred Romer. Romer was present at the Tiki locality during the excavation of the fossil, but died before the description of the genus in 1987. ''Tikisuchus'' is known only from one specimen, called ISI R 305, which consists of the skull and some postcranial elements of a young individual. Description Compared to other rausuchids, the skull of ''Tikisuchus'' was very large. The skull's length is around 40% of the length of the presacral area between the head and the sacrum. The skull is deep, being wide at the back with a narrow rostrum. The teeth are large, recurved and serrated. Like other rauisuchids, it has rows of osteoder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scolotosuchus
''Scolotosuchus'' is an extinct genus of Rauisuchidae, rauisuchid from the Early Triassic of Russia. The only known species, ''Scolotosuchus basileus'', has been discovered at the Donskaya Luka Locality. It differs from all other rauisuchids in the morphology of its spine, which allowed it to both resist great stress and gave it a great range of mobility. Additionally, it may have lacked osteoderms, with its spine instead being supported in a similar manner as in dinosaurs. At it was likely the apex predator of its ecosystem. History and naming In 1999 several isolated fossil remains of a large rauisuchid were described from the Donskaya Luka Locality within the Lipovskaya Formation, located in the Central Russian Upland. The taxon this material was attributed to was named ''Scythosuchus basileus'' by paleontologist Andrey Gerasimovich Sennikov, who at the time thought it was a large but short-necked rauisuchid. Later research conducted by Sennikov however called the validity of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Postosuchus
''Postosuchus'', meaning "Crocodile from Post", is an extinct genus of rauisuchid reptiles comprising two species, ''P. kirkpatricki'' and ''P. alisonae'', that lived in what is now North America during the Late Triassic. ''Postosuchus'' is a member of the clade Pseudosuchia, the lineage of archosaurs that includes modern crocodilians (the other main group of archosaurs is Avemetatarsalia, the lineage that includes all archosaurs more closely related to birds than to crocodilians). Its name refers to Post Quarry, a place in Texas where many fossils of the type species, ''P. kirkpatricki'', were found. It was one of the apex predators of its area during the Triassic, larger than the small dinosaur predators of its time (such as ''Coelophysis''). It was a hunter that probably preyed on large, bulky herbivores such as dicynodonts and many other creatures smaller than itself (such as early dinosaurs). The skeleton of ''Postosuchus'' is large and robust, with a deep skull and a lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polonosuchus
''Polonosuchus'' is a genus of rauisuchid known from the late Triassic (Carnian age) of Poland. It was a huge predator about 5–6 metres in length and, like all rauisuchians, was equipped with a large head of long sharp teeth. The legs were placed almost underneath the body, unlike most reptiles, which would have made it quite fast and a powerful runner. The appearance was very similar to that of the more known ''Postosuchus'', of North America, and shared with the latter the ecological niche of the apex predator.http://www.myshowmywords.com/polonosuchus-silesiacus/ Discovery It was described as ''Teratosaurus silesiacus'' in 2005 by Tomasz Sulej,Sulej, T. (2005). "A new rauisuchian reptile (Diapsida: Archosauria) from the Late Triassic of Poland." ''Journal of Vertebrate Paleontology'', 25(1):78-86. and was transferred to the genus ''Polonosuchus'' by Stephen L. Brusatte, Brusatte ''et al.'' in 2009. However, it is still considered closely related to the remaining ''Teratosauru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
