Holectypoida

Holectypoida

[hō‚lek·tə′pȯid·ə]
(invertebrate zoology)
An order of exocyclic Euechinoidea with keeled, flanged teeth, with distinct genital plates, and with the ambulacra narrower than the interambulacra on the adoral side.
References in periodicals archive ?
Holasteroida, Ha; Holectypoida, He; Neolampadoida, N; Spatangoida, S.