The Neognathostomata are a superorder of sea urchins.
The Neognathostomata are a superorder of sea urchins.
== Description and characteristics == They are distinguished from other sea urchins by their irregular shape and a highly modified feeding lantern. The group includes the well known sand dollars, as well as some less familiar and extinct forms.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).