Trachelosaurus
Extinct genus of archosauromorph reptiles
From Wikipedia, the free encyclopedia
Trachelosaurus is an extinct genus of lizard-like early archosauromorph reptiles in the family Trachelosauridae.[1] It was originally described as a dinosaur[2] until it was redescribed as a "protorosaur" reptile by Robert L. Carroll in 1988.[3] The type species, T. fischeri, was described by F. Broili & E. Fischer in 1917[2] based on remains found in the Solling Formation (Buntsandstein), Bernburg, Germany.[4] A 2024 redescription identified Trachelosaurus as a long-necked and presumably aquatic reptile closely related to Dinocephalosaurus from the Guanling Formation of China.[5]
| Trachelosaurus Temporal range: Early Triassic, | |
|---|---|
.png) | |
| Holotype specimen | |
 | |
| Reconstructed skeleton of the holotype | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Family: | †Trachelosauridae |
| Genus: | †Trachelosaurus Broili & Fischer, 1917 |
| Species: | †T. fischeri |
| Binomial name | |
| †Trachelosaurus fischeri Broili & Fischer, 1917 | |
Classification
In their 2024 redescription of Trachelosaurus, Spiekman and colleagues recovered it in a clade with the Chinese Dinocephalosaurus in a clade previously named Dinocephalosauridae in 2021. However, the principle of priority instructs that the name Trachelosauridae, which was first erected as a monotypic clade for Trachelosaurus, should be used instead. The results of their phylogenetic analyses are shown in the cladogram below:[5]
| Tanysauria |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
