… is an early mammaliaform genus that lived during the late Triassic period. It first appeared about 205 million years ago. Unlike many other early mammals, Morganucodon is well represented by abundant and well preserved, though in the vast majority of cases disarticulated, material.
Morganucodon was a small, plantigrade animal. The tail was moderately long. According to Kemp (2005) “the skull was 2-3 cm in length and a presacral body length of about 10 cm [4 inches]. In general appearance it would have looked like a shrew or mouse”. There is evidence that it had specialized glands used for grooming, which may indicate that, like more advanced mammaliaformes, it had fur…
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illustration by FunkMonk