Metazoica

 This is the largest family of pentadactyls. The family Pileatidae is characterized by the legs and arms all being of the same length, a throat pouch, and usually a horse-like mane. This is a highly varied group of lemurs, they range in size from the very tiny genus Sylpha , which is small enough to build their nests in bamboo stalks, to the genus Toru , which stands as tall as a 3-storey building. The diet also greatly varies. The majority of species feed on leaves, grass, fruits, nuts, berries, occasionally insects and small vertebrates. But one group, the Tyrannocypikinae, are almost completely carnivorous, feeding on large mammals, birds and bats. They feed on meat far more than any other pentadactyls, whether they kill the prey themselves, or scavenge. This group of lemurs somewhat parallels the modern family Lemuridae, in that all their limbs are the same length, and the tail of most species is long and held upward. Rather like a cat's tail. The tail may be tipped by a large ...

 I realize this is late. I was so excited going to the bird expo last weekend, this blog slipped my mind. But I am back now. The family Pinnepitheciidae is the earliest branch of completely aquatic pentadactyls. They arose from the family Promonsamiidae, particularly from the genus Hydrabilis , which is also the precursor of Thaladapis . These sea monkeys differ from the Delphinadapids by having larger, more rounded flippers, and a relatively shorter, spade-shaped tail. But like all other aquatic pentadactyls, these animals are just as agile in the water as other lemurs are in the trees. But unlike such aquatic lemurs as the Promonsamiids, these lemurs are almost entirely aquatic, only coming ashore on the beach to sleep and rear young. They breed in colonies, like sea lions. Their movement is not like that of sea lions, but more like sea turtles. They push themselves over the sand using all four flippers. The fur is short, but thick, like a bear's coat. All species are mostly acti...