About
Note: Do not rely on this information. It is very old.
Asthenosoma
Asthenosoma, a deep-sea Echinoid with a flexible test; it is of interest, as many of the oldest known Sea-urchins resembled it in this respect.
Asthenosoma, a deep-sea Echinoid with a flexible test; it is of interest, as many of the oldest known Sea-urchins resembled it in this respect.