Tethytheria

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Tethytheria
Tethytheria 2.jpg
Top: African elephant, Caribbean Manatee Middle: Moeritherium, Woolly mammoth Bottom: Paleoparadoxia, Arsinoitherium
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
(unranked): Afrotheria
(unranked): Paenungulata
(unranked): Tethytheria
McKenna 1975
Orders

Tethytheria is a clade of mammals that includes the sirenians and the proboscideans and the extinct orders Desmostylia and Embrithopoda.[1]

Though there is strong anatomical and molecular support for the monophyly of Tethytheria, the interrelationships between the included taxa remain disputed. The tethytheres are united by several characters, including anteriorly facing orbits and more or less bilophodont cheek teeth (double transverse ridges on the crowns of the teeth). Proboscidea and Sirenia are linked together based on auditory characters in their petrosal bones, but this link may be a homoplasy. The Early Eocene family Anthracobunidae may be a sister group of Tethytheria.[2]

Systematics[edit]

Cladogram after Rose 2006.[3]

Altungulata

Perissodactyla



Paenungulata

Hyracoidea


Tethytheria

Embrithopoda



Desmostylia



Proboscidea



Sirenia






Classification[edit]

Classification after Rose 2006.[2]

Notes[edit]

  1. ^ Tethytheria in the Paleobiology Database. Retrieved April 2013.
  2. ^ a b Rose 2006, pp. 242–3
  3. ^ Rose 2006, p. 213

References[edit]