Argonauta argo, Argonaut - The Cephalopod Page
The morphology of the argonaut egg case is commonly used to distinguish between species. The egg case, secreted by a female A. argo, consists of a narrow keel with two rows of sharp bumps, or tubercles, along its length. This laterally compressed, calcareous structure increases in thickness, forming a horn (Norman, 2003).
DA: 71 PA: 90 MOZ Rank: 11