Mesotheriumn.

Brit.

/ˌmɛsə(ʊ)ˈθɪərɪəm/, U.S.

/ˌmɛzoʊˈθɪriəm/; see also meso- comb. form.

Origin: A borrowing from Latin. Etymon: Latin Mesotherium.

Etymology: < scientific Latin Mesotherium, genus name (Serres 1857, in Comptes rendus hebd. de l'Acad. des Sci. 44 961) < meso- meso- comb. form + -therium (see megatherium n.). Compare Macrotherium n., megatherium n., and Moeritherium n.

Palaeontology.

A genus of large notoungulates known from fossils of the Pliocene and Pleistocene epochs in South America; a notoungulate of this genus.

ΚΠ

1876 E. R. Alston in Proc. Zool. Soc. 98 Fossil genus: 1.—Mesotherium.

1883 Encycl. Brit. XV. 372/2 The extinct South American Mesotherium, half Rodent and half Ungulate.

1966 A. S. Romer Vertebr. Paleontol. (ed. 3) xxii. 258/2 Typotherium (Mesotherium) of the Pliocene and Pleistocene was as large as a black bear.

1999 R. Singer Encycl. Palaeontol. II. 898/2 The group Typotheria originally was named after a mesothere genus, Typotherium, but this name later was found to be invalid (Simpson 1940). The genus is known now as Mesotherium, after which the family is named.

This entry has been updated (OED Third Edition, September 2001; most recently modified version published online March 2022).

单词	mesotherium
释义	Mesotheriumn. Brit. /ˌmɛsə(ʊ)ˈθɪərɪəm/, U.S. /ˌmɛzoʊˈθɪriəm/; see also meso- comb. form. Origin: A borrowing from Latin. Etymon: Latin Mesotherium. Etymology: < scientific Latin Mesotherium, genus name (Serres 1857, in Comptes rendus hebd. de l'Acad. des Sci. 44 961) < meso- meso- comb. form + -therium (see megatherium n.). Compare Macrotherium n., megatherium n., and Moeritherium n. Palaeontology. A genus of large notoungulates known from fossils of the Pliocene and Pleistocene epochs in South America; a notoungulate of this genus. ΚΠ 1876 E. R. Alston in Proc. Zool. Soc. 98 Fossil genus: 1.—Mesotherium. 1883 Encycl. Brit. XV. 372/2 The extinct South American Mesotherium, half Rodent and half Ungulate. 1966 A. S. Romer Vertebr. Paleontol. (ed. 3) xxii. 258/2 Typotherium (Mesotherium) of the Pliocene and Pleistocene was as large as a black bear. 1999 R. Singer Encycl. Palaeontol. II. 898/2 The group Typotheria originally was named after a mesothere genus, Typotherium, but this name later was found to be invalid (Simpson 1940). The genus is known now as Mesotherium, after which the family is named. This entry has been updated (OED Third Edition, September 2001; most recently modified version published online March 2022). < n.1876
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