Iliosuchus (meaning "crocodile hipped") is a genus of theropoddinosaur known from Bathonian–age (168.3 – 166.1 mya) rocks of England. It was perhaps 2 metres (6.6 ft) long.[1]
The only known fossils of this genus are three ilia (BMNH R83, OUM J29780 and OUM J28971) from the Stonesfield Slate, Oxfordshire, England. From the holotype BMNH R83, Friedrich von Huene described and named the only species, I. incognitus, in 1932.[2] The generic name is derived from the ilium and Greek Souchos, the crocodile god. The specific name means "unknown" in Latin. Another species, I. clevelandi, was proposed in 1976 by Peter Galton,[3] who assigned Stokesosaurus clevelandi to Iliosuchus, but this has found no acceptance among other researchers;[4] in 1980 Galton himself withdrew his opinion.[5]
The Iliosuchus ilia, very small with a length of nine to ten centimetres, have a vertical supra–acetabular ridge on the surface, similar to tyrannosaurids and many other predatory dinosaurs belonging to the group Tetanurae, including Piatnitzkysaurus and Megalosaurus.[6] Such fragmentary and incomplete material is inadequate for accurate classification; nonetheless, Iliosuchus has sometimes been considered a tyrannosaurid ancestor. This is unlikely to be correct as the bones cannot be distinguished from small individuals of Megalosaurus, a megalosaurid. Whatever the case, Iliosuchus is not diagnostic and is therefore dubious.[6] If Iliosuchus incognitus is a tyrannosauroid, it would be a possible ancestor to Proceratosaurus, the earliest recognized tyrannosauroid, and would be the earliest of the tyrannosauroids.
^Holtz, Thomas R. Jr. (2008) Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages Supplementary Information
^F. v. Huene (1932). "Die fossile Reptil-Ordnung Saurischia, ihre Entwicklung und Geschichte", Monographien zur Geologie und Palaeontologie, serie 14(1-2): 1-361
^P. M. Galton, (1976), "Iliosuchus, a Jurassic dinosaur from Oxfordshire and Utah", Palaeontology19(3): 587-589
^Benson, R.B.J. (2008). "New information on Stokesosaurus, a tyrannosauroid (Dinosauria: Theropoda) from North America and the United Kingdom". Journal of Vertebrate Paleontology. 28 (3): 732–750. doi:10.1671/0272-4634(2008)28[732:NIOSAT]2.0.CO;2. S2CID 129921557.
^Galton, P.M.; Powell, H.P. (1980). "The ornithischian dinosaur Camptosaurus prestwichii from the Upper Jurassic of England". Palaeontology. 23: 411–443.
^ abBenson, R.B.J. (2009). "An assessment of variability in theropod dinosaur remains from the Bathonian (Middle Jurassic) of Stonesfield and New Park Quarry, UK and taxonomic implications for Megalosaurus bucklandii and Iliosuchus incognitus." Palaeontology 52 857-877, [1]
October 02, 2023
iliosuchus, meaning, crocodile, hipped, genus, theropod, dinosaur, known, from, bathonian, rocks, england, perhaps, metres, long, temporal, range, bathonian, preꞒ, drawing, bmnh, r83photograph, bmnh, r83scientific, classificationdomain, eukaryotakingdom, anima. Iliosuchus meaning crocodile hipped is a genus of theropod dinosaur known from Bathonian age 168 3 166 1 mya rocks of England It was perhaps 2 metres 6 6 ft long 1 IliosuchusTemporal range Bathonian 168 166 Ma PreꞒ Ꞓ O S D C P T J K Pg N Drawing of BMNH R83Photograph of BMNH R83Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClade DinosauriaClade SaurischiaClade TheropodaClade OrionidesClade AvetheropodaClade CoelurosauriaGenus IliosuchusHuene 1932Type speciesIliosuchus incognitusHuene 1932SynonymsMegalosaurus incognitus von Huene 1932 originally Iliosuchus The only known fossils of this genus are three ilia BMNH R83 OUM J29780 and OUM J28971 from the Stonesfield Slate Oxfordshire England From the holotype BMNH R83 Friedrich von Huene described and named the only species I incognitus in 1932 2 The generic name is derived from the ilium and Greek Souchos the crocodile god The specific name means unknown in Latin Another species I clevelandi was proposed in 1976 by Peter Galton 3 who assigned Stokesosaurus clevelandi to Iliosuchus but this has found no acceptance among other researchers 4 in 1980 Galton himself withdrew his opinion 5 The Iliosuchus ilia very small with a length of nine to ten centimetres have a vertical supra acetabular ridge on the surface similar to tyrannosaurids and many other predatory dinosaurs belonging to the group Tetanurae including Piatnitzkysaurus and Megalosaurus 6 Such fragmentary and incomplete material is inadequate for accurate classification nonetheless Iliosuchus has sometimes been considered a tyrannosaurid ancestor This is unlikely to be correct as the bones cannot be distinguished from small individuals of Megalosaurus a megalosaurid Whatever the case Iliosuchus is not diagnostic and is therefore dubious 6 If Iliosuchus incognitus is a tyrannosauroid it would be a possible ancestor to Proceratosaurus the earliest recognized tyrannosauroid and would be the earliest of the tyrannosauroids See also EditTimeline of tyrannosaur researchReferences Edit Holtz Thomas R Jr 2008 Dinosaurs The Most Complete Up to Date Encyclopedia for Dinosaur Lovers of All Ages Supplementary Information F v Huene 1932 Die fossile Reptil Ordnung Saurischia ihre Entwicklung und Geschichte Monographien zur Geologie und Palaeontologie serie 1 4 1 2 1 361 P M Galton 1976 Iliosuchus a Jurassic dinosaur from Oxfordshire and Utah Palaeontology 19 3 587 589 Benson R B J 2008 New information on Stokesosaurus a tyrannosauroid Dinosauria Theropoda from North America and the United Kingdom Journal of Vertebrate Paleontology 28 3 732 750 doi 10 1671 0272 4634 2008 28 732 NIOSAT 2 0 CO 2 S2CID 129921557 Galton P M Powell H P 1980 The ornithischian dinosaur Camptosaurus prestwichii from the Upper Jurassic of England Palaeontology 23 411 443 a b Benson R B J 2009 An assessment of variability in theropod dinosaur remains from the Bathonian Middle Jurassic of Stonesfield and New Park Quarry UK and taxonomic implications for Megalosaurus bucklandii and Iliosuchus incognitus Palaeontology 52 857 877 1 Retrieved from https en wikipedia org w index php title Iliosuchus amp oldid 1168116112, wikipedia, wiki, book, books, library,
