Scylacosauridae, Broom, 1903

Huttenlocker, Adam, 2009, An investigation into the cladistic relationships and monophyly of therocephalian therapsids (Amniota: Synapsida), Zoological Journal of the Linnean Society 157 (4), pp. 865-891 : 888

Scylacosauridae (six characters)

4. Rostrum is moderately long and about as high as it is broad (2).

7. A shallow preorbital depression anterior to a thickened ridge on the anterior margin of the orbit is present, extending anteroventrally from the lacrimal to the canine buttress of the maxilla (1).

15. Orbit positioned relatively high, elevated to or above the dorsal temporal margin (0). (Reversal to the primitive therapsid condition; conv. in baurioids.)

16. Anterior border of orbit located on transverse midline of skull (2). (Modified from van den Heever, 1994; conv. in Olivierosuchus , Promoschorhynchus and baurioids.)

49. Interpterygoid vacuity of adults extremely reduced (1). (From Kemp, 1972a; conv. in Theriognathus .)

75. Upper incisors numerous, more than five (1). (Conv. in Anomodontia , non- Charassognathus cynodonts and all baurioids except Bauria .)