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Trilophosaurus jacobsi âśť

Description

Trilophosaurus (Greek for "lizard with three ridges") is a lizard-like trilophosaurid allokotosaur known from the Late Triassic of North America. It was a herbivore up to 2.5 m long. It had a short, unusually heavily built skull, equipped with massive, broad flattened cheek teeth with sharp shearing surfaces for cutting up tough plant material. Teeth are absent from the premaxilla and front of the lower jaw, which in life were probably equipped with a horny beak.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4967953https://www.gbif.org/species/4967953
PaleoBioDB ID (PBDB)69041https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=69041
Rankspecies
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Trilophosauridae : Trilophosaurus : Trilophosaurus jacobsi
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Eosuchia : Trilophosaurus : Trilophosaurus jacobsi
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
phylumChordataHaeckel 1847
subphylumVertebrataLamarck 1801
superclassGnathostomataGegenbauer 1874
-Osteichthyes
-SarcopterygiiRomer 1955
subclassDipnotetrapodomorpha
subclassTetrapodomorpha
-Tetrapoda
-ReptiliomorphaSäve-Söderbergh 1934
-AnthracosauriaSäve-Söderbergh 1934
-Batrachosauria
-Cotylosauria
-AmniotaHaeckel 1866
-SauropsidaHuxley 1864
classReptiliaLaurenti 1768
subclassEureptilia
-RomeriidaGauthier et al. 1988
-Diapsida
-Eosuchia
-NeodiapsidaBenton 1985
-SauriaGauthier 1984
-Archosauromorpha
-CrocopodaEzcurra 2016
-AllokotosauriaNesbitt et al. 2015
genusTrilophosaurusCase 1928
speciesTrilophosaurus jacobsiMurry 1987
Generic NameTrilophosaurus
Scientific NameTrilophosaurus jacobsi Murry, 1987
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Trilophosaurus jacobsispeciesbelongs to Trilophosaurusstated with evidenceMurry, 1987
Trilophosaurus jacobsispeciesbelongs to Trilophosaurusstated without evidenceMurry, 1989
Trilophosaurus jacobsispeciesbelongs to TrilophosaurusimpliedIrmis, 2005
Trilophosaurus jacobsispeciesbelongs to Trilophosaurusstated with evidenceHeckert et al., 2006
Status (PBDB)extinct
Taxon Size (PBDB)1
First Recorded Appearance237 - 209 Ma
Late/Upper Triassic
Last Recorded Appearance228 - 209 Ma
Late/Upper Triassic
Environmentterrestrial (based on Diapsida)
Motilityactively mobile (based on Osteichthyes)
Dietherbivore (based on Trilophosaurus)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)P. A. Murry. 1987. New reptiles from the Upper Triassic Chinle Formation of Arizona. Journal of Paleontology 61(4):773-786
Wikipediahttps://en.wikipedia.org/wiki/Trilophosaurus_jacobsi

Fossil Distribution

Obsolete Names

NameSourceTaxon RankTaxonomy
Trilophosaurus dornorum Mueller & Parker, 2006GBIFspeciesAnimalia : Chordata : Reptilia : Trilophosauridae : Trilophosaurus : Trilophosaurus dornorum

Synonymy List

YearName and Author
1987Trilophosaurus jacobsi Murry p. 773–774
1989Trilophosaurus jacobsi Murry p. 274
2005Trilophosaurus jacobsi Irmis p. 70
2006Trilophosaurus jacobsi Heckert et al.
2006Trilophosaurus dornorum Mueller and Parker p. 121 figs. 3, 5B
2007Trilophosaurus jacobsi Spielmann et al.
2008Trilophosaurus jacobsi Spielmann et al. p. 11

References

Murry P. A. (1987) New reptiles from the Upper Triassic Chinle Formation of Arizona, Journal of Paleontology 61 4, 773-786
Murry P. A. (1989) Microvertebrate fossils from the Petrified Forest and Owl Rock Members (Chinle Formation) in Petrified Forest National Park and vicinity, Arizona, Dawn of the Age of Dinosaurs in the American Southwest, New Mexico Museum of Natural History, Albuquerque, 249-277
Irmis R. B. (2005) The vertebrate fauna of the Upper Triassic Chinle Formation in northern Arizona, In S. J. Nesbitt, W. G. Parker, & R. B. Irmis (eds.), Guidebook to the Triassic Formations of the Colorado Plateau in Northern Arizona: Geology, Paleontology, and History. Mesa Southwest Museum Bulletin 9, 63-88
Heckert A. B., Lucas S. G., et al (2006) Revision of the archosauromorph reptile Trilophosaurus, with a description of the first skull of Trilophosaurus jacobsi, from the Upper Triassic Chinle Group, West Texas, USA, Palaeontology 49 3, 621-640
Mueller B. D., Parker W. G. (2006) A new species of Trilophosaurus (Diapsida: Archosauromorpha) from the Sonsela Member (Chinle Formation) of Petrified Forest National Park, Arizona, A Century of Research at Petrified Forest National Park, 1906-2006: Geology and Paleontology. Museum of Northern Arizona Bulletin 62, 119-125
Spielmann J. A., Lucas S. G., et al (2008) The Late Triassic archosauromorph Trilophosaurus, New Mexico Museum of Natural History and Science Bulletin 43, 1-177
B. D. Mueller, W. G. Parker (2006) A new species of Trilophosaurus (Diapsida: Archosauromorpha) from the Sonsela Member (Chinle Formation) of Petrified Forest National Park, Arizona: A Century of Research at Petrified Forest National Park, 1906-2006: Geology and Paleontology. Museum of Northern Arizona Bulletin: 119--125 - via Catalogue of Life
J. A. Spielmann, S. G. Lucas, L. F. Rinehart, A. B. Heckert (2008) The Late Triassic archosauromorph Trilophosaurus: New Mexico Museum of Natural History and Science Bulletin: 1--177 - via Catalogue of Life
P. A. Murry (1987) New reptiles from the Upper Triassic Chinle Formation of Arizona: Journal of Paleontology 4: 773--786 - via Catalogue of Life
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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