Dinosauriformes
From Palaeos.org
| DINOSAUROMORPHA | |
| Taxonomy | Phylogeny - note that many of these early forms are scrappy and their relationships poorly known |
Class: Reptilia
|
o Ornithodira |--Pterosauria `--o DINOSAUROMORPHA |--Lagerpeton `--o Dinosauriformes |--Lagosuchus (Lagosuchidae) `--+?-Pseudolagosuchus (Lewisuchidae) `--+?-Teyuwasu |?-Silesaurus `--+?-Herrerasauria (or Saurischia/Theropoda) `--+?-Agnostiphitys `--o Dinosauria |--Ornithischia `--Saurischia |
<--- Picture goes here --->
Contents |
Information
Dinosauriformes: Lewisuchus (= Pseudolagosuchus).
Range: from Middle Triassic.
Phylogeny: Dinosauromorpha: Lagerpeton + *: Lagosuchidae + Dinosauria.
Characters
This page needs to be wikified. At its simplest, wikifying can just mean adding links to other pages via the edit tab. For help in editing Palaeos org pages, see the edit help page
- Shortened forelimbs.
- $ At least partially perforated acetabulum (??).
- Enlarged supraacetabular ridge;
- Primitively, acetabulum remained relatively large compared to femoral head.
- $ Antitrochanter on posterior wall of acetabulum (primitively small).
- $ Extension of femoral articular surface under head of femur (?).
- $ Proximal femur with fossa trochanterica and trochanteric shelf.
- $ Anterior (lesser) trochanter on femur.
- $ Trochanteric shelf on proximal femur.
- $ Cnemial crest present on proximal tibia.
- $ Quadrangular distal tibia with lateral longitudinal groove.
- $ Posterior flange on the distal end of tibia.
References
- Hutchinson & Gatesy (2000); Novas (1996); Sereno & Arcucci (1994).
Links
Credits
Palaeos com ATW010323. This page MAK061024
