†Protoceratinae †Synthetoceratinae ==Taxonomy== The Protoceratidae were named by Marsh (1891). The type is Protoceras. It was assigned to Pecora by Cook in 1934; to Ruminantia by Thurmond and Jones (1981) and Spaulding et al. (2009); to Tylopoda by Carroll and by Webb et al. in 2003. It was assigned to Artiodactyla by Marsh (1891), Hulbert and...