Dissertation Research: Form and Function of the Strepsirhine

早期灵长类动物化石和现存原猿后颅骨骨骼的相似性使早期研究人员得出结论，最早的灵长类动物与现在的原猿以相似的方式移动。然而，很少有骨骼特征与生命形式的特定位置行为可靠地联系在一起，因此，对已灭绝的早期灵长类动物的推断行为仍然不清楚，这使得从功能角度解释灵长类动物颅后形态的进化变化变得困难。与骨骼的其他部分相比，手和手腕确实反映了不同运动模式的明显适应。精确的生物力学模型包含手腕形态的特定变化，可以用来重建化石灵长类动物的位置/运动行为，并记录它们的系统发育变化模式。本论文通过视频、解剖尸体标本和测量灵长类动物腕部骨骼来揭示灵长类动物腕部形态和位置行为的历史变迁。* * * P人类学\ jfried \ \ 9320237。腹肌 -​& (+ - ！!!!D - - (Times New Roman Symbol & Arial " h Pc ePc e = Jonathan Friedlaender

ABSTRACT P.I. Marian Dagosto SBR- 9320237 Similarities in the post-cranial skeletons of early fossil primates and extant prosimians have led earlier researchers to conclude that the earliest primates moved about in similar ways to current prosimians. However, very few features of the skeleton have been reliably correlated with specific positional behaviors in living forms, so that the inferred behaviors of extinct early primates remain unclear, making it difficult to interpret evolutionary change in primate postcranial morphology from a functional perspective. More than any other element of the skeleton, the hand and wrist do reflect clear adapations to different locomotor patterns. Precise biomechanical models incorporating specific variation in wrist morphology can be formulated to reconstruct positional/locomotor behaviors in fossil primates and to document their phylogenetic patterns of change. This dissertation research, using video, dissection of cadaver specimens, and measurement of primate wrists in skeletal collections, will reveal historical transitions in primate wrist morphology and positional behavior. *** P\anthro\jfried\9320237.abs - & ( + - ! ! ! ! D - - ( Times New Roman Symbol & Arial " h Pc ePc e = Jonathan Friedlaender Jonathan Friedlaender