著者

未包 鉄郎 門田 真人 浜田 隆士 中山 克己

出版者

日本地質学会

雑誌

日本地質学会学術大会講演要旨

巻号頁・発行日

vol.91, 1984-03-25

著者

加瀬 友喜 浜田 隆士 児子 修司

出版者

国立科学博物館

雑誌

Bulletin of the National Science Museum. Series C, Geology & paleontology (ISSN:0385244X)

巻号頁・発行日

vol.13, no.1, pp.29-34, 1987-03

被引用文献数

1

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Discovery of hyoliths from the Gedinnian bed of the Lower (to Middle?) Devonian Fukuji Formation in central Japan constitutes the first occurrence of this group from Japan. The operculum shows features much in common with Joachimilites MAREK, 1967 that was previously known only from the Ordovician bed in Bohemia. It now appears that the genus ranges from the Ordovician (Caradocian) to Early Devonian. The Fukuji species, Joachimilites fukujiensis, is described as new.

著者

浜田 隆士

出版者

日本貝類学会

雑誌

貝類学雑誌 (ISSN:00423580)

巻号頁・発行日

vol.24, no.3, pp.181-_198-1_, 1965-12-30 (Released:2018-01-31)

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Post-mortem drift of the Recent Nautilus shells by oceanic currents is exemplified by the materials collected from the west coast of the Malayan Peninsula and the Japanese Island arcs. Characteristics of habitat (H) and realm of post-mortem transport (T) in general fossil assemblages were schematically explained. T is composed of H, To and Tt, where To is the realm of postmortem transportation outer than H in usual condition, and Tt is the extended portion of To especially caused by an oriented agency of transportation such as turbidity current or strong oceanic current for instance. Thanathocoenose in H is tentatively called as quasiautochthonous assemblage being separated from the true autochthonous, i.e. orthoautochthonous one. Thus, allochthonous assemblage is defined as the dead assemblage out of H or the inner realm of post-mortem transportation. In short, there is an almost fixed relationship between H and T insofar as the areal distribution, and an inequality T>>H, where T=H+To+Tt, is given. The distributional pattern of T inclusive of To and Tt is also diagrammatically presented. Its general figure shows an asymmetry to the center of H. State of preservation, density of distribution and other g neral characteristics of a thanathocoenose should have a tendency to decrease as the realm becomes wider and wider. This tendency is named H→Tt declination.

著者

浜田 隆士 奥谷 喬司 棚部 一成 出口 吉昭 福田 芳生 波部 忠重 平野 弘道 蟹江 康光 川本 信之 三上 進 小畠 郁生

出版者

日本貝類学会

雑誌

貝類学雑誌 (ISSN:00423580)

巻号頁・発行日

vol.37, no.3, pp.131-136, 1978

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Progress and some results of the second rearing experiment of Nautilus macromphalus in Tokyo are described. The temperature controlling experiment is still applying to three extant individuals, that were supplied from New Caledonia last year through the courtesy of the ORSTOM in Noumea, and they are surviving for 222 days in captivity (May 14, 1978). Copulating behaviors are observed mostly in the waters of 17-19℃ in temperature but not in the cooler conditions. Shell growth at the apertural periphery was first measured to find that some individuals probably in a gerontic stage show no remarkable increment on one hand, the young specimens show 10-12 mm elongation per 100 days on the other. Recently the JECOLN also takes care of a living Nautilus pompilius that had been floated possibly from the Philippines along the Kuroshio Current over 2, 000 km and was captured by a fishing net set off Kawajiri, Kagoshima Prefecture in Kyushu, Southwest Japan.

著者

未包 鉄郎 門田 真人 浜田 隆士 中山 克己

出版者

一般社団法人 日本地質学会

雑誌

日本地質学会学術大会講演要旨

巻号頁・発行日

vol.1984, 1984