楸樹溝小球接子

楸樹溝小球接子（Geragnostus (Micragnostus) chiushuensis Kobayashi, 1931）是採集於衢州市江山市碓邊的化石標本。

基本介紹

• 中文名：楸樹溝小球接子
• 外文名：Geragnostus (Micragnostus) chiushuensis Kobayashi, 1931
• 產地：衢州市江山市碓邊
• 保存單位： 中國科學院南京地質古生物研究所

特徵描述

The outline of the cephalon is roughly subsquare, with a rounded anterior margin, and a length subequal to width. The glabella is strongly convex, subcylindrical in shape or slightly tapers anteriorly to the rounded front The marginal furrow is deep and wide, and the border is convex, tapering rearwards.

主要用途

地層劃分與對比。