粗尾鼠負鼠屬(Thylamys,[1]白鼠負鼠),哺乳綱的一屬,而與鼠負鼠屬(白鼠負鼠)同科的動物尚有林負鼠屬(安氏負鼠)、短尾負鼠屬(短尾負鼠)等之數種哺乳動物。
事实速览 科学分类, 模式種 ...
粗尾鼠負鼠屬![](//upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Infobox_info_icon2.svg/18px-Infobox_info_icon2.svg.png)
化石时期: 中新世中期Colloncuran至現在
表达式错误:预期外的<运算符。
表达式错误:预期外的<运算符。
|
|
Elegant fat-tailed mouse opossum
|
科学分类
|
界:
|
动物界 Animalia
|
门:
|
脊索动物门 Chordata
|
纲:
|
哺乳纲 Mammalia
|
演化支:
|
有袋類 Marsupialia
|
目:
|
負鼠目 Didelphimorphia
|
科:
|
負鼠科 Didelphidae
|
亚科:
|
負鼠亞科 Didelphinae
|
属:
|
粗尾鼠負鼠屬 Thylamys Gray , 1843
|
模式種
|
Didelphis elegans
Waterhouse 1839
|
物种
|
見內文
|
关闭
本屬物種的前上頜骨是圓的而不是尖的。雌獸有育幼袋,而且其乳頭在腹部排成對稱的兩排 [2]。除T. macrurus以外,其餘物種皆以其尾部儲存脂肪[3],儘管可能這並不適7於所有同屬物種[4]。
現時本屬包括下列各現生種:
- Cinderella fat-tailed mouse opossum (T. cinderella)
- (Thylamys citellus) [5]
- Elegant fat-tailed mouse opossum (T. elegans)
- (Thylamys fenestrae) [6]
- Karimi's fat-tailed mouse opossum (T. karimii)
- Paraguayan fat-tailed mouse opossum (T. macrurus) Olfers 1818
- White-bellied fat-tailed mouse opossum (T. pallidior) Thomas 1902
- (T. pulchellus) [7]
- Common fat-tailed mouse opossum (T. pusillus) Desmarest 1804
- Argentine fat-tailed mouse opossum (T. sponsorius)
- Tate's fat-tailed mouse opossum (T. tatei)
- Dwarf fat-tailed mouse opossum (T. velutinus)
- Buff-bellied fat-tailed mouse opossum (T. venustus) Thomas 1902
Fossils belonging to the genus date back to the 中新世, with the oldest specimens being found in the Cerro Azul Formation of 阿根廷 and the Honda Group of 哥伦比亚.[8] Genetic studies indicate that the genus may have originated around 14 million years ago.[9]
Fossil species:[10]
- T. colombianus Goin 1997
- T. minutus Goin 1997
- T. pinei Goin et al. 2000
Steiner, C.; et al. New DNA data from transthyretin nuclear intron suggest an Oligocene to Miocene diversification of living South American opossums (Marsupialia: Didelphidae). Molecular Phylogenetics and Evolution. 2005, 35: 363–379. PMID 15804409. doi:10.1016/j.ympev.2004.12.013.