| Trachelosaurus Temporal range: Early Triassic,
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| Holotype specimen | |
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| Reconstructed skeleton of the holotype | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauromorpha |
| Family: | †Trachelosauridae |
| Genus: | †Trachelosaurus Broili & Fischer, 1917 |
| Species: | †T. fischeri
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| Binomial name | |
| †Trachelosaurus fischeri Broili & Fischer, 1917
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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]
Classification
[edit]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 |
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References
[edit]- ^ O. Kuhn. (1971). Reptiles of the German Triassic. 1-105
- ^ a b F. Broili and E. Fischer. (1917). Trachelosaurus fischeri nov. gen. nov. sp. A new dinosaur from the Buntsandstein of Bernburg. Jahrbuch der Königlich Preussischen geologischen Landesanstalt zu Berlin 37(1):359-414
- ^ R. L. Carroll. (1988). Vertebrate Paleontology and Evolution 1-698
- ^ H. H. Ecke. (1986). Palynologie des Zechsteins und Unteren Buntsandsteins im Germanischen Becken. Dissertation Georg-August-Universität Göttingen 1-117
- ^ a b Spiekman, Stephan N. F.; Ezcurra, Martín D.; Rytel, Adam; Wang, Wei; Mujal, Eudald; Buchwitz, Michael; Schoch, Rainer R. (2024-03-15). "A redescription of Trachelosaurus fischeri from the Buntsandstein (Middle Triassic) of Bernburg, Germany: the first European Dinocephalosaurus-like marine reptile and its systematic implications for long-necked early archosauromorphs". Swiss Journal of Palaeontology. 143 (1): 10. doi:10.1186/s13358-024-00309-6. ISSN 1664-2384.
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Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction