Morganucodonta
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Morganucodonta is an extinct order of basal Mammaliaformes, a group including crown-group mammals and their close relatives. Their remains have been found in Southern Africa, Western Europe, North Ame
Megazostrodon
Docofossor NT flipped
Nocturnal bottleneck
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The nocturnal bottleneck hypothesis is an evolutionary biology hypothesis to explain the origin of several mammalian traits. In 1942, Gordon Lynn Walls described this concept which states that placent
Morganucodonta
…some species attained large sizes and were carnivorous. Nocturnality is believed to have evolved in the earliest mammals in the Triassic (called the nocturnal bottleneck) as a specialisation that allowed them to exploit a safer, night-time niche, while most larger predators were likely to have been active during the day…
Artist's impression of the Purbeck lagoon at dusk: Durlstotherium (right and center foreground) and Durlstodon (left foreground) ventured out at night to hunt insects. The theropod Nuthetes is holding a captured Durlstotherium (centre middle distance).
The flash of a camera causes glare reflected by the tapetum lucidum within the eyes of a European badger. The tapetum is one of many traits adapted for nocturnal life that are commonly found in mammals.
Brasilitherium, a near-mammalian cynodont, was probably a nocturnal burrower.
The whiskers on a shrew, used in finding prey, navigation and socialization