Like living animals, fossil remains of once-living animals are
classified and grouped according to their relationships to each other and to their ancestors.
Some fossils yield DNA which helps scientists determine these animals' similarity to living animals.
Order: Artiodactyla* (even-toed hoofed animals: includes pigs, sheep goats, cattle, deer)
Family: Antilocapridae (includes only one living member - the pronghorn, Antilocacapra americana and many fossil taxa)
Species: Capromeryx minor (Taylor, 1911)
*Note: New anatomical and DNA evidence on the relationship between Artiodactyla (even-toed ungulates) and Cetacea (whales and dolphins) recently led to a merging of the two orders into a new group, Cetartiodactyla (Montgelard, 1997; reviewed in Kulemzina, 2009). As of October 2012, experts had not agreed on whether to define Cetartiodactyla as an official taxonomic order that would replace Artiodactyla and Cetacea. Some continue to list giraffes in the order Artiodactyla (Franklin, 2011) or use the term Cetartiodactyla without defining it as an order (IUCN, 2008).
Janis & Manning (1998)
Hernández Fernández & Vbra (2005)
Morgan & Morgan (1995)