Wikipedia
Gobiosuchidae
Gobiosuchidae is a family of Cretaceous crocodyliforms known from Mongolia and Spain.
| Gobiosuchidae Temporal range: Late Barremian - Early Campanian | |
|---|---|
| A specimen of Gobiosuchus encased in armor | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Pseudosuchia |
| Clade: | Crocodylomorpha |
| Clade: | Crocodyliformes |
| Family: | †Gobiosuchidae Osmólska, 1972 |
Genera edit
Three genera are currently classified within Gobiosuchidae: Cassissuchus, Gobiosuchus, and Zaraasuchus.[1]
Synapomorphies edit
According to Pol & Norell (2004), gobiosuchids form a clade united by the following synapomorphies:
- Parietal without broad occipital portion
- Absence of external mandibular fenestra
- More than two parallel rows of dorsal osteoderms
- Cranial table as wide as ventral portion of skull
- Palpebrals sutured to each other and the frontal, excluding it from the orbital margin
- External surface of ascending process of jugal exposed posterolaterally
- Longitudinal ridge on lateral surface of jugal below infratemporal fenestra
- Dorsal surface of posterolateral process of squamosal ornamented with three longitudinal ridges
- Presence of a sharp ridge along ventral surface of angular
- Surangular with a longitudinal ridge on its dorsolateral surface
- Dorsal surface of osteoderms ornamented with anterolaterally and anteromedially directed ridges
- Cervical region surrounded by lateral and ventral osteoderms sutured to the dorsal elements
- Presence of appendicular osteoderms
- Closed, or incipiently close, supratemporal fenestra
Sources edit
- Pol, D. & Norell, M. A., (2004). "A new gobiosuchid crocodyliform taxon from the Cretaceous of Mongolia". American Museum Novitates 3458: 1-31.
References edit
- ^ Ángela D. Buscalioni (2017) The Gobiosuchidae in the early evolution of Crocodyliformes. Journal of Vertebrate Paleontology Article: e1324459 doi: https://dx.doi.org/10.1080/02724634.2017.1324459 http://www.tandfonline.com/doi/full/10.1080/02724634.2017.1324459