While climate change dominates headlines in the modern era, it loomed large in the lives of the many species that inhabited the Americas thousands of years before mankind began belching ... Read More

The Clydesdale-sized Hippidion possessed a highly distinctive, long, domed nasal bone. Because of this unusual feature, some scientists speculate that Hippidion had an elongated, flexible snout. Look at the skull ... Read More

The evolutionary lineage of the horse is among the best-documented in all paleontology. The history of the horse family, Equidae, began during the Eocene Epoch, which lasted from about 55.8 ... Read More

The ancestry of the horse family is obscure; small, multiple-toed, primitive representatives, known as Hyracotherium (or Eohippus) appeared simultaneously in Europe and America near the beginning of the Cenozoic era ... Read More

Apart from a couple of bothersome side branches, horse evolution presents a neat, orderly picture of natural selection in action. The basic story line goes like this: as the woodlands ... Read More

This small dog-sized animal is the oldest found horse ancestor that lived about 55 million years ago. It had a primitive short face, with eye sockets in the middle ... Read More