|
Hokkaido University Collection of Scholarly and Academic Papers >
Education and Research Programs, Collaborative Project Center >
21st Century COE Program, Neo-Science of Natural History - Origin and Evolution of Natural Diversity >
Origin and Evolution of Natural Diversity >
Proceedings >
Habitats of Bivalves in the Lower-Cretaceous Aptian Tanohata and Aptian to Albian Hiraiga Formations, Iwate Prefecture, Northeastern Japan
Title: | Habitats of Bivalves in the Lower-Cretaceous Aptian Tanohata and Aptian to Albian Hiraiga Formations, Iwate Prefecture, Northeastern Japan |
Authors: | Komatsu, Toshifumi Browse this author | Yoshihara, Kazuki Browse this author | Dick, Matthew H. Browse this author →KAKEN DB | Takashima, Reishi Browse this author | Ostrovsky, Andrew N. Browse this author | Nishi, Hiroshi Browse this author |
Keywords: | Bivalve | Depositional environment | Mid-Cretaceous | Miyako Group | Palaeoecology |
Issue Date: | 2008 |
Publisher: | 21st Century COE for Neo-Science of Natural History, Hokkaido University |
Citation: | Edited by Hisatake Okada, Shunsuke F. Mawatari, Noriyuki Suzuki, Pitambar Gautam. ISBN: 978-4-9903990-0-9 |
Journal Title: | Origin and Evolution of Natural Diversity : Proceedings of the International Symposium, The Origin and Evolution of Natural Diversity, held from 1-5 October 2007 in Sapporo, Japan |
Start Page: | 163 |
End Page: | 170 |
Abstract: | We reconstructed the depositional environments, assemblages, and habitats of characteristic bivalve species in the Cretaceous Miyako Group, Iwate Prefecture, Northeast Japan. The upper part of the Aptian Tanohata Formation and the lower part of the Aptian to Albian Hiraiga Formation are composed mainly of wave- and storm-dominated shoreface and inner-shelf fossiliferous deposits. The shoreface deposits contain abundant allochthonous bivalve shells. In-situ preserved Cucullaea acuticarinata Nagao, Pterotrigonia hokkaidoana (Yehara), Pterotrigonia yokoyamai (Yehara), and Goniomya subarchiachi Nagao are common in inner-shelf deposits. These fossils provide important knowledge concerning the evolutionary history of Lower to mid-Cretaceous shallow marine benthic communities. |
Description: | International Symposium, "The Origin and Evolution of Natural Diversity". 1–5 October 2007. Sapporo, Japan. |
Conference Name: | International Symposium, "The Origin and Evolution of Natural Diversity" |
Conference Place: | Sapporo |
Type: | proceedings |
URI: | http://hdl.handle.net/2115/38454 |
Appears in Collections: | Origin and Evolution of Natural Diversity > Proceedings
|
|