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Temporal range: early to late Eocene
Heterohyus fossil from Messel Pit, at the Naturkundemuseum, Karlsruhe, Germany
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Apatotheria
Family: Apatemyidae
Genus: Heterohyus
Gervais, 1848
Type species
Heterohyus nanus

Heterohyus is an extinct genus of apatemyid from the early to late Eocene. A small, tree-dwelling creature with elongated fore- and middle fingers, in these regards it somewhat resembled a modern-day aye-aye.
Three skeletons have been found at the early Eocene site at Messel Pit, Germany[1]


  1. ^ Schaal & Ziegler (1992), pp. 174-177.


  • McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp. ISBN 0-231-11013-8
  • Morlo, Michael et al. An annotated taxonomic list of the Middle Eocene (MP11) Vertebratae of Messel gives as author: Teilhard de Chardin, 1921 - please refer to footnote 88.
  • Kenneth David Rose. The Beginning of the Age of Mammals. JHU Press, 2006, ISBN 0-8018-8472-1, ISBN 978-0-8018-8472-6, 428 pp. gives as author: Koenigswald, 1990
  • Schaal, Stephan, & Ziegler, Willi (eds) 1992. Messel. An insight into the history of life on Earth. Clarendon Press, Oxford. ISBN 0 19854654 8.

External links[edit]

Media related to Heterohyus at Wikimedia Commons