中部更新統渥美層群の軟体動物化石の追加記録−コウイカ類とタコ類による穿孔痕を残した二枚貝と巻貝

抄録

The sepiidan fossil and drilling holes attributed to octopodids from the Middle Pleistocene Atsumi Group, southwest Japan, are reported. A cuttlebone of Acanthosepion cf. esculentum (Hoyle) is the second record of Sepiidae from the Atsumi Group. The octopod drilling holes preserved in pelecypod and gastropod shells are figured for the first time from the group.