Assertion: irregular sea urchin | /r/Synonym | irregularia
Facets:
Source sentences:
text: The "irregular" sea urchins are an infra-class inside the Euechinoidea, called Irregularia, and include Atelostomata and Neognathostomata.
text: A sand dollar, an irregular sea urchin (Irregularia).
text: The "irregular" sea urchins are an infra-class inside the Euechinoidea, called Irregularia, and include Atelostomata and Neognathostomata.
text: The irregular sea urchins are an infra-classis inside the Euechinoidea, called Irregularia, and including Atelostomata and Neognathostomata.