Like living animals, fossil remains of once-living animals are classified and grouped according to their relationships to each other and to their ancestors.
Order: *Artiodactyla (even-toed hoofed animals; includes pigs, sheep goats, cattle, deer)
Species: Hemiauchenia macrocephala - Extinct Large-headed or Stilt-legged Camel
Describer: Cope, 1893
*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).
Cui et al. (2007)
Honey et al. (1998)
Janis et al. (2002)
McKenna and Bell (1997)
Webb et al. (2006)