西藏海仙蛤

西藏海仙蛤（Panopea xizangensis Wen, 2000）是採集於藏南地區崗巴群的化石標本。

基本介紹

• 中文名：西藏海仙蛤
• 外文名：Panopea xizangensis Wen, 2000
• 產地：藏南地區崗巴群
• 保存單位： 中國科學院南京地質古生物研究所

特徵描述

shell medium-sized, horizontally elliptical, slightly strong convex. anterior margins closed and posterior margins gaping; anterior margin slightly convex, posterior part of ventral margin somewhat convex; posterior margin narrowly round. umbo broad, prominent over hinge line, placed at about 2/5 of shell length behind anterior extremity; beak incurved. anterior umbonal carina rounded, distinctly prominent; posterior umbonal carina not distinct. surface ornamented with irregular concentric ridges which weakenen through anterior umbonal carina. a high prominent tooth just blow beaks on each valve.

主要用途

地層劃分與對比。