First, by the time Morganucodon was alive 190 million years ago, the brain was almost 50 % larger than
in cynodonts, and areas that process smell, such as the olfactory bulb, were distinctly larger.
Not exact matches
The most primitive mammals probably appeared
in the late Triassic, descending from a mammal - like suborder of theraspid reptiles known as
cynodonts.
Like other non-mammalian synapsids, therocephalians are described as mammal - like reptiles, although
in fact, Therocephalia is the group most closely related to the
cynodonts, which gave rise to the mammals.