number of downloads : ?
Title Transcription
フクシマケン ヒガシ タナグラ チイキ クボタソウ カラ サンシュツ スル Anadara ゾク ニマイガイ カセキ ノ ケイタイ ソクテイ
Title Alternative (English)
Morphometric analyses of the genus Anadara (Bivalvia; Arcidae) from the Miocene Kubota Formation in the eastern Tanagura area, Fukushima Prefecture, Northeast Honshu, Japan
File
language
jpn
Author
Suzuki, Takuma
Description
The taxonomic classification of the genus Anadara (Bivalvia) from the Miocene Kubota Formation in the eastern Tanagura area has been controversial in previous studies, because there are wide ranges in its shell variation. The present study conducts morphometric analyses of fossil Anadara collected from three localities (Kamitoyo, Kubota, and Tanaka) of the formation as a basic study to describe the morphologic variation through time and space. As a result, the Kamitoyo population can be distinguished from other two populations by its shell shape and ontogenetic pattern. In turn, morphometric differences between Kubota and Tanaka populations should be resulted from an intraspecific variation because these two populations have a common ontogenetic pattern of the shell-coiling mode. According to ontogenetic parameters of hinge teeth, these three populations are placed in the subgenus Anadara. We distinguish the Kamitoyo population into an independent species Anadara (Anadara) tanakuraensis Noda from the rest two populations belonging to Anadara (Anadara) hataii Noda.
Subject
Anadara
Fukushima Prefecture
Kubota Formation
Miocene
Morphometric analysis
Journal Title
島根大学地球資源環境学研究報告
Volume
33
Start Page
75
End Page
88
ISSN
13439774
Published Date
2015-02-27
NCID
AA11455176
DOI(SelfDOI)
Publisher
島根大学大学院総合理工学研究科地球資源環境学教室
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
Gyoseki ID
e25196
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering
他の一覧