Perissodactyla, Artiodactyla and Primates ... origin of these orders is one of the great conundrums of mammalian evolution. Perissodactyls, including extant horses, rhinoceroses and tapirs ...

Though paleontologists had found remains of Perissodactyla from as far back as the beginnings of the Eocene epoch (about 56 million years ago), their earlier evolution remained a mystery, says Ken ...

Though paleontologists had found remains of Perissodactyla from as far back as the beginnings of the Eocene epoch, about 56 million years ago, their earlier evolution remained a mystery ...

"What we have found is essentially the cousin of all the living perissodactyls," said Ken Rose, a professor of functional anatomy and evolution ... the Mammalian Order Perissodactyla Originated ...

(2010). Postcranial Functional Morphology of Hyracotherium (Equidae, Perissodactyla) and Locomotion in the Earliest Horses Journal of Mammalian Evolution DOI: 10.1007/s10914-010-9145-7 ...