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单词 litoptern
释义

litopternn.

/lɪˈtɒptəːn/
Forms: Also litopternan.
Etymology: < modern Latin name of order Litopterna (F. Ameghino 1889, in Actas Acad. Nac. Córdoba VI. 492), < Greek λῑτός smooth + πτέρνη heel-bone.
Palaeontology.
An extinct South American ungulate mammal of the order so called.
ΘΚΠ
the world > animals > mammals > group Ungulata (hoofed) > [noun] > extinct types of (miscellaneous)
coryphodon1846
titanothere1863
Dinoceras1872
brontothere1877
coryphodont1880
titanotheroid1890
litoptern1927
titanotherian1927
1891 E. D. Cope in Amer. Naturalist 25 688 The articulation in the Litopterna is of ungulate character.]
1927 J. B. S. Haldane & J. S. Huxley Animal Biol. xi. 243 (caption) Extinct South American Litopternan.
1933 A. S. Romer Vertebr. Paleontol. xvi. 316 Small litopterns..present in the oldest known Tertiary beds of South America, had primitive bunodont cheek teeth.
1971 Nature 15 Jan. 172/1 In some mammals, tapirs, elephants, the extinct astropotheres, pyrotheres, and litopterns, the external nares are posterior and large.

Derivatives

litopternine adj. /lɪˈtɒptɜːnaɪn/
ΘΚΠ
the world > animals > mammals > group Ungulata (hoofed) > [adjective] > of or like extinct or fossil types
titanotherian1863
titanotheroid1907
litopternine1925
1925 C. R. Eastman tr. K. A. von Zittel Text-bk. Palaeontol. III. 123 The Litopternine suborder of ungulates is restricted to South America.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2021).
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n.1925
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