Fernando H. de S. Barbosa, Rafael Costa da Silva, Laís Alves-Silva, Alexandre Liparini, Hermínio I. de Araújo-Júnior
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引用次数: 0
摘要
Nothrotherium maquinense是一种在更新世时期与其他巨型动物共同存在的已灭绝树懒物种，关于其生活的各个方面一直存在着激烈的争论。本研究综合考察了 N. maquinense 的特定前臂骨骨折（古病理学）和前肢功能指数（古生态学），以推断其可能的运动模式和对底质的偏好。我们的研究结果提供了令人信服的证据，表明N. maquinense具有攀爬能力，很可能过着半荒野的生活方式。此外，我们还首次报告了该物种的焦磷酸钙沉积病（CPPD），表明该树懒存在这种关节炎。
Integrating paleopathology and paleoecology to unravel the lifestyle of the Pleistocene sloth Nothrotherium maquinense
Nothrotherium maquinense, an extinct sloth species that existed alongside other megafauna during the Pleistocene, has been a subject of intense debate regarding various aspects of its life. This study integrates an examination of specific forearm bone fracture (paleopathology) with forelimb functional indices (paleoecology) in N. maquinense in order to infer its likely mode of locomotion and substrate preferences. Our findings provide compelling evidence suggesting that N. maquinense possessed climbing abilities and likely had a semi-arboreal lifestyle. Additionally, we report the first occurrence of calcium pyrophosphate deposition disease (CPPD) in this species, indicating that this type of arthritic condition was present in this sloth.
期刊介绍：
Journal of Mammalian Evolution is a multidisciplinary forum devoted to studies on the comparative morphology, molecular biology, paleobiology, genetics, developmental and reproductive biology, biogeography, systematics, ethology and ecology, and population dynamics of mammals and the ways that these diverse data can be analyzed for the reconstruction of mammalian evolution. The journal publishes high-quality peer-reviewed original articles and reviews derived from both laboratory and field studies. The journal serves as an international forum to facilitate communication among researchers in the multiple fields that contribute to our understanding of mammalian evolutionary biology.
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