词条 | Zosuchus |
释义 |
| taxon = Zosuchus | fossil_range = Late Cretaceous | authority = Pol and Norell, 2004 | subdivision_ranks = Species | subdivision =
}} Zosuchus ("Zos [Canyon] crocodile") is a genus of basal, Late Cretaceous crocodyliform from the Mongolia. The type species is Z. davidsoni, after Amy Davidson. DiscoveryIt was found in the Redbeds of Zos Canyon (Djadokhta Formation) in the Gobi Desert of Mongolia by expeditions organized by the American Museum of Natural History, and described by palaeontologists Diego Pol and Mark Norell in 2004. Material of Z. davidsoni consists of five specimens:
MorphologyThis genus had a very short snout. SystematicsPol & Norell (2004) found Zosuchus davidsoni to be sister to Sichuanosuchus and Shantungosuchus, the three forming a basal clade of crocodyliforms based on the presence of a ventrally deflected posterior region of the mandibular rami. A 2018 cladistic analysis found Zosuchus, along with Sichuanosuchus, Shantungosuchus, and Shartegosuchidae, to form a basal mesoeucrocodyliform clade, Shartegosuchoidea.[1] Sources1. ^Kathleen N. Dollman; James M. Clark; Mark A. Norell; Xu Xing; Jonah N. Choiniere (2018). "Convergent evolution of a eusuchian-type secondary palate within Shartegosuchidae". American Museum Novitates. 3901: 1–23. doi:10.1206/3901.1.
3 : Late Cretaceous crocodylomorphs of Asia|Terrestrial crocodylomorphs|Fossils of Mongolia |
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