This article relies largely or entirely on a single source. (March 2022) |
Deslongchampsina is an extinct genus of machimosaurid crocodyliform from the Middle Jurassic (Bathonian) Cornbrash Formation of England and France, possibly from the Calcaire de Caen.
| Deslongchampsina Temporal range: Middle Jurassic | |
|---|---|
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| Neotype skull | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Pseudosuchia |
| Clade: | Crocodylomorpha |
| Suborder: | †Thalattosuchia |
| Family: | †Machimosauridae |
| Genus: | †Deslongchampsina Johnson et al., 2019 |
| Species: | †D. larteti |
| Binomial name | |
| †Deslongchampsina larteti (Eudes-Deslongchamp, 1866) | |
History
editThe type species was originally named Steneosaurus lerteti in 1868. The genus Steneosaurus was used as a longtime wastebasket taxon for various teleosauroid specimens and had more than a dozen species. The type species, Steneosaurus rostromajor is undiagnostic, making the genus and species dubious and invalid. Additionally, many species of so called "Steneosaurus" were found to be quite different and unrelated to one another, thus needing new generic names.[1]
In 2019, Michela Johnson and colleagues redescribed "Steneosaurus" larteti, creating the new genus and combination Deslongchampsina larteti.
Classification
editDeslongchampsina was an intermediate machimosaurid, being closely related to but not a part of derived subfamily Machimosaurinae.
The cladogram below is from an analysis conducted by Johnson and colleagues in 2020.[1]
Ecology
editIts snout was not as elongated as some other teleosauroids (mesorostrine), and the shape of its jaws and teeth suggest that it was a generalist predator, unlike the more powerful contemporary machimosaurin Yvridiosuchus.[2]
References
edit- 1 2 Johnson, Michela M.; Young, Mark T.; Brusatte, Stephen L. (2020). "The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution". PeerJ. 8 e9808. doi:10.7717/peerj.9808. PMC 7548081. PMID 33083104.
- ↑ Michela M. Johnson; Mark T. Young; Stephen L. Brusatte (2019). "Re-description of two contemporaneous mesorostrine teleosauroids (Crocodylomorpha: Thalattosuchia) from the Bathonian of England and insights into the early evolution of Machimosaurini". Zoological Journal of the Linnean Society. Advanced online publication (2): 449–482. doi:10.1093/zoolinnean/zlz037. hdl:1842/36656.
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