I'm only getting an answering machine purchase efavirenz It took Simpson and his colleagues several years to unearth the horse skeleton, finding pieces of it over time. Based on observations of a full-length leg bone, the researchers determined that the ancient horse was an adept runner, a conclusion drawn by the length of the leg bone, which was much longer than horses dated to be 2 million years of more older. An analysis of its teeth revealed it relied heavily on eating grasses.