Spatangoida


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Synonyms for Spatangoida

heart-shaped sea urchins

References in periodicals archive ?
jacobyi bear a striking resemblance to the characteristic larval form of irregular urchins in the order Spatangoida (Mortensen, 1921; Rees, 1953).
Holasteroida, Ha; Holectypoida, He; Neolampadoida, N; Spatangoida, S.
Of these, eight involve brood-protection (Cidaroida, Temnopleuroida, Echinoida, Spatangoida [including Schizasteridae and Brissidae], Holasteroida, Cassiduloida, Clypeasteroida).
Spatangoida (II)-Amphisternata (II)-Spatangidae, Loveniidae, Pericosmidae, Schizasteridae, Brissidae.