A new fossil peccary from the Pleistocene-Holocene boundary of the eastern Yucatán Peninsula, Mexico
A new fossil peccary from the Pleistocene-Holocene boundary of the eastern Yucatán Peninsula, Mexico
复制标题
DOI：
10.1016/j.jsames.2016.11.003
复制
发表时间：
2017-08
影响因子：
1.8
通讯作者：
Sarah R. Stinnesbeck;E. Frey;W. Stinnesbeck;Jerónimo Avíles Olguín;P. Zell;Alejandro Terrazas Mata;M. Sanvicente;A. González;C. R. Sandoval;E. Nuñez
中科院分区：
文献类型：
--
作者：
Sarah R. Stinnesbeck;E. Frey;W. Stinnesbeck;Jerónimo Avíles Olguín;P. Zell;Alejandro Terrazas Mata;M. Sanvicente;A. González;C. R. Sandoval;E. Nuñez
在这里，我们描述了来自墨西哥东南部金塔纳罗奥州水下喀斯特洞穴系统的化石pecary的左侧下颌分支。该标本是在Tulúm西北的Muknal洞穴中发现的，是pecary termedMuknalia minima的新属和新种。该分类群可能来自更新世晚期，与所有现存物种及其更新世亲缘物种有显著区别，下颌支尾缘有凹痕，且有明显的腹向角突。这些诊断性的骨学差异表明，咀嚼器官与所有其他物种不同，这可能暗示了晚更新世Yucatán半岛上的生态隔离。
Here we describe the left mandibular ramus of a fossil peccary from the submerged karst cave system in the southeastern Mexican state of Quintana Roo. The specimen, which was discovered in the Muknal cave northwest of Tulúm, is a new genus and species of peccary termedMuknalia minima.The taxon likely dates from the latest Pleistocene and differs significantly from all extant peccaries and their Pleistocene relatives by a concave notch at the caudal edge of the mandibular ramus and prominent ventrally directed angular process. These diagnostic osteological differences suggest that the masticatory apparatus differed from all other peccaries, which may hint to an ecological isolation on the late Pleistocene Yucatán Peninsula.