Mammals Belong to The

Question

Mammals belong to the
A)anapsid lineage.
B)synapsid lineage.
C)diapsid lineage.
D)polydont lineage.
E)dinosaur lineage.

Accepted Answer

Mammals belong to the synapsid lineage, which evolved from an early reptilian ancestor that had a single opening (temporal fenestra) in the skull behind the eye socket. This is in contrast to diapsids, which have two openings behind the eye socket, and anapsids, which lack temporal fenestrae altogether.