This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.
You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.
For more information on ToL tree formatting, please see Interpreting the Tree or Classification. To learn more about phylogenetic trees, please visit our Phylogenetic Biology pages.close box
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Boisserie, J. R., F. Lihoreau, and M. Brunet. 2005. Origins of Hippopotamidae (Mammalia, Cetartiodactyla): towards resolution. Zoologica Scripta 34(2):119-143.
Boisserie, J. R. and T. D. White. 2004. A new species of Pliocene Hippopotamidae from the Middle Awash, Ethiopia. Journal of Vertebrate Paleontology 24(2): 464-473.
Corbet, G. B. 1969. The taxonomic status of the Pygmy hippopotamus, Choeropsis liberiensis, from the Niger Delta. Journal of Zoology 158: 387-394.
Coryndon, S. C. 1978. Hippopotamidae. Pages 483-495 in: Evolution of African Mammals. V. J. Maglio and H. B. S. Cooke, eds. Harvard University Press, Cambridge, MA.
Eltringham, S. K. 1999. The Hippos. Cambridge University Press, Cambridge.
Harrison, T. 1997. The anatomy, paleobiology, and phylogenetic relationships of the Hippopotamidae (Mammalia, Artiodactyla) from the Manonga Valley, Tanzania. Pages 137-190 in: Neogene Paleontology of the Manonga Valley, Tanzania. T. Harrison, ed. Plenum Press, New York.
Petronio, C. 1995. Note on the taxonomy of Pleistocene hippopotamuses. Ibex 3:53-55.
Stuenes, S. 1989. Taxonomy, habits, and relationships of the subfossil Madagascan Hippopotami Hippopotamus lemerlei and H. madagascariensis. Journal of Vertebrate Paleontology 9(3):241-268.
Thewissen, J. G. M., E. M. Williams, L. J. Roe and S. T. Hussain. 2001. Skeletons of terrestrial cetaceans and the relationship of whales to artiodactyls. Nature 413:277-281.
Weston, E. M. 2000. A new species of Hippopotamus Hexaprotodon lothagamensis (Mammalia: Hippopotamidae) from the late Miocene of Kenya. Journal of Vertebrate Paleontology 20(1):177-185.
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- First online 23 February 2006
Citing this page:
Tree of Life Web Project. 2006. Hippopotamidae. Version 23 February 2006 (temporary). http://tolweb.org/Hippopotamidae/30340/2006.02.23 in The Tree of Life Web Project, http://tolweb.org/