文献一覧: 井尻正二 (著者)

9 0 0 0 "和井内遺跡"より出土したパレオパラドキシアの臼歯について

著者: 佐藤二郎井尻正二
出版者: 地学団体研究会
雑誌: 地球科学 (ISSN:03666611)
巻号頁・発行日: vol.31, no.4, pp.149-155, 1977

The purpose of the present article is to describe the mode of occurrence of the molar teeth M3 of Paleoparadoxia tabatai (TOKUNAGA) from "Wainai site" and to consider its archaeological significance. 1) Wainai site is situated on the river terrace at Wainai, Niisato-village, Shimohei-district, Iwate Prefecture, Northeastern Japan. This terrace might be formed at Wurm stage. 2) There are two cultural layers in the terrace deposits at Wainai site. Judging from designs and types of the ceramic tools accompanied, the lower and upper cultural layer may be of the latest Jomon Period and the latest Jomon or the earlist Yayoi Period respectively. Taking into account the circumstances at the time of excavation, it is presumed that the molar teeth were picked up from the lower cultural layer. 3) Among the strata developed in the vicinity of the Wainai site, the Oligocene Kogawa group, especially the Sawamagari formation distributed in Iwaizumi town, Iwate Prefecture is the most probable as the original horizon yield the molar teeth, although it is impossible to make sure the locality of the original fossil. 4) Based on the paleontological and archaeological experiences, the teeth seem to have been collected and processed in order to make the knocknack by the latest Jomon man. If this inference is correct, the teeth are the oldest Desmostylid specimen in Japan collected and processed by the pre-historic humanbeings.

2016-08-13 11:50:49
9 + 10 Twitter

2 0 0 0 小学校時代を偲んで(<特集>応用地質の現場ではいま)

著者: 井尻正二
出版者: 地学団体研究会
雑誌: 地学教育と科学運動 (ISSN:03893766)
巻号頁・発行日: vol.29, pp.45-50, 1998

2022-02-28 16:13:51
2 + 1 Wikipedia

2 0 0 0 OA ヒトのネオテニー説批判

著者: 井尻正二秋山雅彦後藤仁敏
出版者: 地学団体研究会
雑誌: 地球科学 (ISSN:03666611)
巻号頁・発行日: vol.45, no.1, pp.1-18, 1991-01-25 (Released:2017-06-06)

The purpose of this paper is to indicate a biological misunderstanding on the neoteny doctrine and a danger of the biological determinism inevitably included in the doctrine. The neoteny doctrine discussed in this paper is used in a broad sense, including Bolk's fetalization, Montagu's neoteny and Gould's retardation theories. A general understanding of the term (concept) of neoteny is a mixture of the above-mentioned three, though exemplifications of their characters for neoteny are not always same. Morphogenesis is classified into the following eight types by de Beer; 1) caenogenesis, 2) deviation, 3) neoteny, 4) reduction, 5) adult variation, 6) retardation, 7) hypermorphosis, and 8) acceleration. According to this classification, Bolk's fetalization and Montagu's neoteny correspond to neoteny, and Gould's retardation is to retardation and neoteny. Anatomical characters of Homo sapiens are enumerated in Table 1, where characters identified as neoteny by Bolk, Montagu and Gould are marked with circles. However, the critique of the neoteny doctrine should be focused on the anatomical characters for bipedal walk in erect posture, since this posture is the most important biological character of Homo sapiens. Bipedal walk in erect posture consists of erect posture, bipedalism and walk. The most fundamental characters are sigmoidal flexure of a vertebral column for erect posture, shape of a pelvis for bipedalism, and plantar arches for walk. If the neoteny doctrine is correct, those fundamental characters of Homo sapiens should appear in fetus or infant stages of anthropoids. Anatomical and comparative embryological examinations reveal that those characters are not observed in these stages. It is, therefore, concluded that the above-mentioned characters of Homo sapiens do not support the neoteny doctrine. Since the fundamental characters of Homo sapiens do not support neoteny, discussion on the other characters hitherto related to neoteny seems to be unnecessary. However, we discussed such characters as cranium, cranial flexure and direction of vagina so far regarded to be representative for neoteny, and proved that these characters are not to be neoteny. All of those who support the neoteny doctrine of Homo sapiens believe the human body as a perfect (harmonic) reality without any contradiction and are, at the same time, lacking in historical (geohistorical or phylogenic) viewpoints to human body constituent organs. Moreover, the neoteny doctrine originates in neglect or disregard of the importance of 'human society' in the course of humanization of the genus Homo. Lastly, we discussed the background for the birth of the neoteny doctrine and suggested the existence of biological determinism behind. We insist that organically unified natural and social sciences could become only the science in the 21 century.