Earlier we looked at several instances of convergence within the Reptilia. Here is another illustrated example.
Certain therapsids and crocodylomorphs became plant-eaters.
In doing so some converged on a short, squat body plan. Moschops (Broom 1911, Gregory 1926) is one such therapsid. Much smaller Simosuchus (Kraus and Kley 2010) is one such crocodylomorph (Fig.1).
Though different in size,
both taxa evolved from longer, longer-tailed forms with longer jaws filled with sharp teeth. Tiny Simosuchus was armored. Moschops was not. Both taxa had an elevated skull, a deep, wide torso, sprawling limbs and a deep pelvis.
Broom R 1911. On some new South African Permian reptiles. Proceedings of the Zoological Society of London 81(4):1073-1082.
Gregory W 1926. The skeleton of Moschops capensis, a dinocephalian reptile from the Permian of South Africa. Bulletin of the American Museum of Natural History 56 (3): 179–251.
Krause DW and Kley NJ eds. 2010. Simosuchus clarki (Crocodyliformes: Notosuchia) from the Late Cretaceous of Madagascar. Journal of Vertebrate Paleontology 30, Supplement to Number 6: 236 pp.