sentence: Earlier synapsids replace their teeth throughout life, as sauropsids also do.
sentences_before: It is for this, and its tooth replacement and determinate growth,means juvenile growth has a definite stopping-point that 'Morganucodon' is now usually considered a true mammal.van Nievelt, Alexander F.H.  and Kathleen K. Smith 2005.
concept_name: earlier synapsid
headings: Morganucodon Is it a mammal?
categories: Theriodonts