Echinoida is an order of sea urchins in the class Echinoidea. They are distinguished from other sea urchins by simultaneously possessing both an un-sculpted test and a feeding lantern with large plates fused across the top of each pyramid.
ホンウニ目
Order
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Echinoida is an order of sea urchins in the class Echinoidea. They are distinguished from other sea urchins by simultaneously possessing both an un-sculpted test and a feeding lantern with large plates fused across the top of each pyramid.
==Taxonomy== Order Echinoida family Echinidae Gray, 1825 family Echinometridae Gray, 1825 family Parasaleniidae family Strongylocentrotidae Gregory, 1900
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).