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''Marmosops'' is a genus of Neotropic opossums of the family Didelphidae. It includes the following species: * Genus ''Marmosops'' * * Bishop's slender opossum (''Marmosops bishopi'') * * Narrow-headed slender opossum (''Marmosops cracens'') * * Creighton's Slender opossum (''Marmosops creightoni'') * * Dusky slender opossum (''Marmosops fuscatus'') * * Handley's slender opossum (''Marmosops handleyi'') * * Tschudi's slender opossum (''Marmosops impavidus'') * * Gray slender opossum (''Marmosops incanus'') * * Panama slender opossum (''Marmosops invictus'') * * Junin slender opossum (''Marmosops juninensis'') * * Neblina slender opossum (''Marmosops neblina'') * * White-bellied slender opossum (''Marmosops noctivagus'') * * Dorothy's slender opossum (''Marmosops ocellatus'') * * Delicate slender opossum (''Marmosops parvidens'') * * Brazilian slender opossum (''Marmosops paulensis'') * * Pinheiro's slender opossum (''Marmosops pinheiroi'') ==''Marmosops'' as a genus== The genus known as ''Marmosops'' was originally treated as a subgenus from the genus ''Marmosa'' rather than having their own classification. This was changed in 1989 by Gardner and Crieghton, who officially separated the group and made them their own genus. The mix-up between to genera ''Marmosa'' and ''Marmosops'' was common due to the similar appearances including size and other external features. However, the two groups differ significantly in their integument and in the arrangement of their skull and dentition.〔() Voss, R.S., Tarifa, T., and E. Yensen. 2004. An Introduction to Marmosops (Marsupialia: Didelphidae), with the Description of a New Species from Bolivia and Notes on the Taxonomy and Distribution of Other Bolivian Forms. American Museum of Natural History. 3466:2-34.〕 The dentition is similar in morphology between the two groups, with the exception of the deciduous lower third premolar varying from one genus to the next. The similarity between the two continues to cause the ''Marmosops'' genus to be frequently misidentified due to the lack of knowledge regarding the species along with the overlooked traits that help separate them from other opossums.〔 The ''Marmosops'' are also commonly confused with the genus ''Gracilinanus'', but this is quickly ruled out by a large number of differing characteristics.〔 These differences include the arrangement of their digits, caudal (anatomical term) scales, and the central hair on the scales changing from a three hairs per follicle to many more. This causes the hair of the ''Gracilinanus'' to be thicker and has also found to be heavily pigmented.〔 The last group commonly confused with ''Marmosops'' is known as the genus ''Thylamys''. These animals have a contrasting dorsal body pelage and the taxa are actually quite different.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Marmosops」の詳細全文を読む スポンサード リンク
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