Sea urchin (Echinoidea species)
Description
Notes: [One of] 171 specimens of Echinoderms, Tunicata, Crustacea, & Sponges, all duplicates from the Challenger collection
Notes: [One of] 171 specimens of Echinoderms, Tunicata, Crustacea, & Sponges, all duplicates from the Challenger collection