Echinozoa (Sea Urchins And Sea Cucumbers) is a subphylum of echinoderms. There are 5262 species of Sea Urchins And Sea Cucumbers, in 987 genera and 171 families. This subphylum has been around since the middle ordovician epoch. It includes groups like Sea Cucumbers and Sea Urchins.
EOL has data for 11 attributes, including: