标签：#史前軟體動物

罩螺科

{{Automatic Taxobox | taxon = Tryblidiidae | authority = von Zittel, 1899 | fossil_range = 埃迪卡拉纪或寒武纪 | image = Pilina unguis.jpg | image_caption = Drawing of the shell of Pilina unguis. Head region is on the left. | subd…