|Named By:||P. E. Olsen in 1979|
|Time Period:||Late Triassic|
|Location:||USA, Arizona - Chinle Formation, New Jersey - Lockatong Formation, and North Carolina - Cow Branch Formation|
|Size:||Roughly about 50-60 centimetres long|
|Classification:||| Chordata | Reptilia | Protorosauria | Tanystropheidae ||
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. Fossils of Tanytrachelos are found in a series of lakebed sediments that were deposited over the course of about 350 thousand years. Some fossils are very well-preserved and include the remains of soft tissues.