A family of small marine snails that are parasitic on echinoderms; plural of eulimid, referring to snails in this family.
From the genus Eulima plus the -idae suffix, which is the standard taxonomic suffix for naming families of organisms.
Eulimidae snails evolved to be such specialized parasites that each species often targets only one type of host—it's an example of extreme coevolution between predator and prey!
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