"A cool, temperate climate prevailed in parts of South Africa where, within their den nestled among the Dicroidium flora on the upland hillsides, a protective Thrinaxodon watches over her playful pups. These mammal-like reptiles are believed to have had some degree of parental care and a social gregariousness similar to the behavioural characteristics of present-day mammals."
From Dinosaurs: A Global View (1990) by Sylvia J. Czerkas & Stephen A. Czerkas. Illustrated by Douglas Henderson, Mark Hallett, John Sibbick.













