Coat-of-mail shell and Sea cradle

Coat-of-mail shell noun - Primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates.

Sea cradle is a synonym for coat-of-mail shell. In some cases you can use "Sea cradle" instead a noun phrase "Coat-of-mail shell".

Sea cradle noun - Primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates.

Coat-of-mail shell is a synonym for sea cradle. You can use "Coat-of-mail shell" instead a noun phrase "Sea cradle".