Glossotherium phoenesis sp. nov. from the late Pleistocene of intertropical Brazil is described and compared with Glossotherium robustum and Glossotherium tropicorum. Compared to these two species, the main differences occur in the shape of the nasal region and pterygoids, proportionate narrowing of the skull, length and arrangement of the tooth rows, degree of projection and form of the mandibular symphysis, height at various points along the dentary, and proportions of the radius, among others described. Clear differences in two well-preserved skulls of the new species are interpreted as representing sexual dimorphism, as occurs in other ground sloths such as Paramylodon and Eremotherium. Other notable features are described for osteoderms and for the ontogenetic developments of the mandible and dentition. The new species G. phoenesis appears to be one of the most derived Mylodontidae, sister taxon of G. tropicorum, and closely related to Pleurolestodon.

http://zoobank.org/urn:lsid:zoobank.org:pub:3F1BAFDB-FC4A-442E-ADFD-692EB2DC7655

Glossotherium phoenesis sp。十一月 描述了来自热带晚期巴西更新世的物质，并与健壮的and和tropicorum进行了比较。与这两个物种相比，主要差异出现在鼻区和翼状shape的形状，头骨的成比例缩小，齿排的长度和排列，下颌骨的突出程度和形式，沿下颌各点的高度牙齿，以及半径的比例等。新物种的两个保存完好的头骨中的明显差异被解释为代表性二态性，就像在其他地面树懒中一样，如副粘虫和and。描述了其他显着特征，适用于成骨细胞以及下颌和牙列的个体发育。新种G. phoenesis似乎是最起源的Mylodontidae之一，是G. tropicorum的姊妹分类群，并且与Pleurolestodon密切相关。

http://zoobank.org/urn:lsid:zoobank.org:pub:3F1BAFDB-FC4A-442E-ADFD-692EB2DC7655