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Tanytrachelos Temporal range: Late Triassic, Carnian PreꞒ Ꞓ O S D C P T J K Pg N
A specimen of Tanytrachelos
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauromorpha
Clade:	†Tanysauria
Family:	†Tanystropheidae
Genus:	†Tanytrachelos Olsen, 1979
Type species
†Tanytrachelos ahynis Olsen, 1979
Synonyms
Gwyneddosaurus? Bock, 1945

Tanytrachelos is an extinct genus of tanystropheid archosauromorph reptile from the Late Triassic of the eastern United States. It contains a single species, Tanytrachelos ahynis, which is known from several hundred fossil specimens preserved in the Solite Quarry in Cascade, Virginia. Abundant fossils of Tanytrachelos are found in a series of lakebed sediments that were deposited over the course of about 350 thousand years in a lake which existed approximately 230 million years ago. Some fossils are very well-preserved and include the remains of soft tissues. Tanytrachelos is the most likely trackmaker of the ichnogenus Gwyneddichnium.

Tanytrachelos remains have also been found in the Chinle Formation of Arizona and the Lockatong Formation of New Jersey.

References

1. Olsen, Paul E. (1979). "A new aquatic Eosuchian from the Newark Supergroup (Late Triassic–Early Jurassic) of North Carolina and Virginia" (PDF). Postilla. 176: 1–14.
2. Casey, M. M.; Fraser, N. C.; Kowalewski, M. (2007). "Quantitative taphonomy of a Triassic reptile Tanytrachelos ahynis from the Cow Branch Formation, Dan River Basin, Solite Quarry, Virginia". PALAIOS. 22 (6): 598. Bibcode:2007Palai..22..598C. doi:10.2110/palo.2006.p06-010r. hdl:10919/32503. S2CID 128741450.
3. Smith, Omega (formerly "Amy C.") (11 April 2011). Description of Tanytrachelos ahynis and its implications for the phylogeny of Protorosauria (Dissertation). Virginia Tech. hdl:10919/37652.
4. Lucas, Spencer G.; Szajna, Michael J.; Lockley, Martin G.; Fillmore, David L.; Simpson, Edward L.; Klein, Hendrik; Boyland, Jack; Hartline, Brian W. (2014). "The middle-late Triassic tetrapod footprint ichnogenus Gwyneddichnium". New Mexico Museum of Natural History & Science Bulletin. 62: 135–156.
5. Irmis, Randall B. (2005). The vertebrate fauna of the Upper Triassic Chinle Formation in northern Arizona (PDF). Mesa Southwest Museum. pp. 63–88. Archived from the original (PDF) on 2012-10-04.
6. Schein, Jason P.; Parris, David C.; Pellegrini, Rodrigo (2010). A complete and articulated Tanytrachelos ahynis (Reptilia: Protorosauroidea) from the Late Triassic Lockatong Formation of northern New Jersey, U.S.A. (Poster).

v t e Archosauromorpha
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Clade: Diapsida Clade: Sauria Clade: Archelosauria Sauropsida see Sauropsida Archosauromorpha see below↓
Archosauromorpha Archosauromorpha †Aenigmastropheus †Czatkowiella †Elachistosuchus? †Elessaurus †Malutinisuchus †Mecistotrachelos †Prolacertoides †Protorosaurus †Rhombopholis †Vritramimosaurus †Tanysauria Jesairosaurus? Trachelosauridae Austronaga Dinocephalosaurus Fuyuansaurus? Gracilicollum? Protanystropheus Pectodens Sclerostropheus? Trachelosaurus Sharovipterygidae? Ozimek Sharovipteryx Tanystropheidae Amotosaurus Augustaburiania Cosesaurus Fuyuansaurus? Gracilicollum? Gwyneddosaurus Langobardisaurus Luxisaurus Macrocnemus Raibliania Sclerostropheus? Tanystropheus Tanytrachelos Sharovipterygidae? Crocopoda †Boreopricea †Cryptovaranoides? †Tasmaniosaurus †Teyujagua †Allokotosauria see Allokotosauria †Rhynchosauria see Rhynchosauria †Prolacertidae? Kadimakara Prolacerta Archosauriformes see below↓
Archosauriformes Archosauriformes †Antarctanax †Cuyosuchus †Eorasaurus? †Kalisuchus †Koilamasuchus †Sarmatosuchus †Syntomiprosopus †Proterosuchidae Archosaurus Chasmatosuchus? Gamosaurus Jaikosuchus Proterosuchus Samsarasuchus Tsylmosuchus? Vonhuenia? †Protopyknosia Kranosaura Triopticus †Erythrosuchidae Bharitalasuchus Chalishevia Erythrosuchus Fugusuchus? Garjainia Guchengosuchus Shansisuchus Uralosaurus Eucrocopoda †Asperoris †Dorosuchus †Heteropelta †Litorosuchus †Marcianosuchus †Polymorphodon †Vancleavea †Euparkeriidae Euparkeria Halazhaisuchus Osmolskina †Proterochampsia see Proterochampsia Crurotarsi †Phytosauria see Phytosauria Archosauria Incertae sedis †Sikannisuchus? †Smok Avemetatarsalia see Avemetatarsalia includes birds Pseudosuchia see Pseudosuchia includes crocodilians
Related topics Tooth taxa †Crosbysaurus †Lucianosaurus †Tecovasaurus †Palaeosaurus †Protecovasaurus †Uatchitodon †Zanclodon Nomina dubia †Albisaurus †Ankistrodon †Avipes †Blomosuchus †Collilongus †Exilisuchus †Fenhosuchus †Megacnemus †Microcnemus †Vjushkovisaurus †Wangisuchus Paraphyletic groups Proterosuchia Protorosauria Thecodontia Possible members Choristodera Drepanosauromorpha Kuehneosauridae Ichthyosauromorpha Sauropterygia Thalattosauria
Category

• Tanystropheids
• Prehistoric reptile genera
• Carnian genera
• Late Triassic reptiles of North America
• Triassic Arizona
• Paleontology in Arizona
• Chinle fauna
• Triassic geology of New Jersey
• Fossils of New Jersey
• Triassic geology of Virginia
• Paleontology in Virginia
• Fossil taxa described in 1979