| Co-Investigator(Kenkyū-buntansha) |
ZUKERAN Chosei University of the Ryukyus, Faculty of Medicine, Department of Anatomy, Instructor, 医学部, 助手 (70136901)
KONDO Osamu The University of Tokyo, Department of Biological Sciences, Assistant Professor, 大学院・理学系研究科, 講師 (40244347)
|
|---|
| Research Abstract |
Two young hominid skeletons found in Burial Nos. 1 and 2 of Dederiyeh Cave are both Neandertals with approximately the same ages at death. They share many Neandertal anatomical features as well as displaying several differences in some traits. For example, they share the following features: "en bombe" shape from the posterior aspect, combination of the occipital torus and suprainiac pitting, wide nasal bone, long frontal process of the zygomatic bone, circular opening of the internal acoustic meatus. While the marginal tubercle and incisura preangualis are only seen in Dederiyeh 2, the anterior mastoid tubercle is recognized only in Dederiyeh 1.
Both children are quite similar in morphology of the cranial vault and dentition. On the other hand, Dederiyeh 2 is more gracile in mandibulo-facial and postcranial dimensions than Dederiyeh 1 though the dental development of Dederiyeh 2 was more advanced than that of Dederiyeh 1. For instance, dimensions of the zygomatic process of the temporal bone, mandibular corpus, femur and tibia are larger in Dederiyeh 1 than in Dederiyeh 2. There must have been the possible existence of wide ontogenetic variation within a single site, although it may be caused by indistinct factors, such as sex, individual varieties, environmental or chronological differences.
|
