Proterochampsidae

From Palaeos

o Sauria
|--Lepidosauromorpha
`--o Archosauromorpha
   |?--Choristodera
   `--+--Rhynchosauria
      `--+--Trilophosauridae
         `--+--Prolacertiformes
            `--o--Proterosuchidae 
               `--+--Erythrosuchidae
                  `--+--Euparkeriidae
                     `--o--Proterochampsidae
                        `--o Archosauria
                           |--o Ornithodira
                           |  |--Pterosauria
                           |  `--Dinosauromorpha
                           `--Crurotarsi

Range: Middle Triassic (Ladinian) to Late Triassic (Carnian).

Characters: Broad, low skull with small dorsal fenestra; no parietal (pineal) foramen or fossa [P93]; postorbital with strong, dorsally rugose, horizontal crest [S91]; foramina for internal carotids lateral to basipterygoid process [P93]; vertebral intercentra absent [S91] [P93]; primitive plate-like pelvis; calcaneal tuber with some posterior deviation from lateral projection [P93]; astragalar facets for tibia & fibula adjacent [S91]; calcaneal tuber taller than broad [P93]; calcaneal facet for fibula continuous with facet for distal tarsal IV [P93]; calcaneum with hemicylindrical facet for astragalus [P93]; dermal armor present [P93]; aquatic predators from West Gondwanaland.

References: Parrish (1993) [P93]; Sereno (1991) [S91].

ATW040118

[edit] List of species

• Tropidosuchus romeri Arcucci, 1990
• Cerritosaurus binsfeldi
• Chanaresuchus bonapartei
• Gualosuchus reigi
• Proterochampsa barrionuevoi

(from Mikko's Phylogeny Archive)

[edit] Links

• link (treats as crocodylomorph?)

[edit] Credits

ATW040118 Palaeos; this page MAK061023