Dichobunidae Explained

Dichobunidae is an extinct family of basal artiodactyl mammals from the early Eocene to late Oligocene of North America, Europe, and Asia. The Dichobunidae include some of the earliest known artiodactyls, such as Diacodexis.

Description

They were small animals, averaging about the size of a modern rabbit, and had many primitive features. In life, they would have resembled a long-tailed muntjac or chevrotain. Dichobunids had four or five toes on each foot, with each toe ending in a small hoof. They had complete sets of teeth, unlike most later artiodactyls, with their more specialist dentitions.^[1] The shape of the teeth suggests they were browsers, feeding on small leaves, perhaps in the forest undergrowth. The shape of their bodies and limbs suggests they would have been fast-running animals, unlike most of their contemporaries.^[2]

Taxonomy

Classification of dichobunids following McKenna and Bell:^[3]

• † Family Dichobunidae
  • Paraphenacodus
  • Dulcidon
  • Chorlakkia
  • Pakibune
  • Pakkokuhyus^[4]
  • Progenitohyus^[4]
  • Subfamily Dichobuninae
    • Tribe Hyperdichobunini
      • Mouillacitherium
      • Hyperdichobune
    • Tribe Dichobunini
      • Aumelasia
      • Meniscodon
      • Messelobunodon
      • Dichobune
      • Buxobune
      • Neufferia
      • Metriotherium
      • Synaphodus
  • Subfamily Eurodexeinae
    • Eurodexis
    • Eygalayodon
    • Lutzia
    • Parahexacodus
  • Subfamily Diacodexeinae
    • Diacodexis
    • Bunophorus
    • Protodichobune
    • Tapochoerus
    • Neodiacodexis

Notes and References

1. Book: Savage, RJG . Long, MR . amp . 1986 . Mammal Evolution: an illustrated guide. registration . Facts on File. New York. 208–209. 0-8160-1194-X.
2. Book: Palmer, D.. 1999 . The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. Marshall Editions. London. 266. 1-84028-152-9.
3. Book: McKenna, M. C. . S. K. Bell . 1997 . Classification of Mammals Above the Species Level . Columbia University Press . 0-231-11012-X.
4. Stéphane . Ducrocq . 2019 . Pakkokuhyus and Progenitohyus (Artiodactyla, Mammalia) from the Eocene of Southeast Asia are not Helohyidae: paleobiogeographical implications . PalZ. . 93 . 105–113 . 10.1007/s12542-018-0425-5.