タカハシホタテ属

界	:	動物界 Animalia
門	:	軟体動物門 Mollusca
綱	:	二枚貝綱 Bivalvia
亜綱	:	翼形亜綱 Pteriomorphia
目	:	イタヤガイ目 Pectinoida
超科	:	イタヤガイ超科 Pectinacea
科	:	イタヤガイ科 Pectinidae
属	:	タカハシホタテ属 Fortipecten

学名

Fortipecten
(Yabe and Hatai, 1940)

タカハシホタテ属 (Fortipecten) は、新生代の一時期、北太平洋に棲息した貝の分類群で、軟体動物、二枚貝綱、イタヤガイ科に属する。化石でのみ知られる。

特徴

円形の殻の付け根から放射状の筋（放射肋）が並んで伸び、付け根の両側に耳と呼ばれる付属部が張り出すホタテガイの形は、イタヤガイ科に共通する特徴である。タカハシホタテ属では殻の耳が大きく、殻本体と同じくらいの長さになる^[1]。また、右殻が大きく湾曲し、左殻はほぼ平らである^[1]。波打つ放射肋がよく目立つ大型の貝である^[1]。

第三紀の鮮新世に栄えた。

脚注

^ ^a ^b ^c ^d ^e MASUDA Koichiro (1962) "Tertiary Pectinidae of Japan, p222 - 223.
^ ^a ^b 速水格「タカハシホタテ」、『動く大地とその生物』、121頁。

参考文献

速水格「タカハシホタテ」、大場秀章・西野嘉章・編『動く大地とその生物』、東京大学出版会、1995年。
MASUDA Koichiro (増田孝一郎）, "Tertiary Pectinidae of Japan", The science reports of the Tohoku University. Second series, Geology, vol.33, 2, p 117-A21, 1962.

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