贵州剑河八郎凯里组的顾脱贝Kutorgina Billings,1861

Kutorgina from the Cambrian Kaili Formation at Balang Village Jianhe County,Guizhou Province

贵州剑河八郎凯里生物群腕足动物分异度大,多达11属12种,包括舌形贝亚门8属及小嘴贝亚门3属。其中小嘴贝亚门中的顾脱贝(未定种)Kutorgina sp.,壳体较大,平凸型,外形正五边形或横椭圆形,最大宽度位于壳体中央,喙部轻微弯曲,同心层最多可多达32层,背壳未见中隆,相似于澄江化石库的澄江顾脱贝Kutorgina chengjiangensis及关山生物群中的Kutorgina.sp。凯里组顾脱贝的产出及研究,丰富了中国及全球寒武纪顾脱贝的信息。

Abundant brachiopods have been found in Kaili Biota at Balang Village, Jianhe County, Guizhou Province. 12 species, 11 genera have been recognized, including 8 genera of Linguliformea and 3 genera of Rhynchonelliformea. The Kutorgina sp. of Rhynchonelliformea is big, planoconvex, in outline, maximum width located at midlength, beak slightly beding, concentric fold on the dorsal valves are absent. Kutorgina sp. from the Kaili Biota is similar from the Chengjiang Biota and Kutorgina sp. from the Guanshan Biota. This study tion for the research of global Cambrian Kutorgina. pentagon or transversely oval layers up to 32 and median to Kutorgina chengfiangensis provides additional informa-