Trinkaus E, Haduch E, Valde-Nowak P W, Wojtal P
Homo. 2014 Feb;65(1):1-12. doi: 10.1016/j.jchb.2013.09.002.
The human distal thumb phalanx from the earlier Upper Paleolithic of Obłazowa Cave, southern Poland, exhibits features of its palmar surface that align it morphologically principally with early modern humans. These aspects include the configurations of the proximal palmar fossa, the flexor pollicis longus tendon insertion, the proximal margin of the palmar apical tuft, and especially its low ulnar deviation angle. If it is assumed that it possessed the pollical phalangeal length proportions of an early modern human, it would exhibit modest base and tuft breadths. However, given Late Pleistocene archaic-modern contrasts in relative pollical phalanx lengths, the isolated nature of the phalanx prevents secure assessment of its radioulnar interphalangeal articular and apicaltuft hypertrophy. Similar constraints apply to the assessment of other Pleistocene Homo pollical phalanges.
来自波兰南部奥布拉佐瓦洞穴旧石器时代晚期的人类拇指远节指骨，其掌面特征在形态上主要与早期现代人相符。这些方面包括近端掌窝的形态、拇长屈肌腱附着点、掌侧指端毛丛的近端边缘，尤其是其较小的尺偏角。如果假设它具有早期现代人拇指指骨的长度比例，那么它的基部和指端宽度将会适中。然而，考虑到晚更新世古代人与现代人拇指指骨相对长度的差异，该指骨的孤立状态使得难以准确评估其桡尺侧指间关节和指端毛丛肥大情况。类似的限制也适用于对其他更新世人类拇指指骨的评估。
