Cidaroida

Many different fossil Cidaroid radiola (MNHN).

Cidaroida is an order of primitive sea urchins, the only living order of the subclass Perischoechinoidea. All other orders of this subclass, which were even more primitive than the living forms, became extinct during the Mesozoic.

单词	Cidaroida
释义	Cidaroida 英语百科 Cidaroida Cidaroida is an order of primitive sea urchins, the only living order of the subclass Perischoechinoidea. All other orders of this subclass, which were even more primitive than the living forms, became extinct during the Mesozoic.
随便看	Grammodes的意思 grammographus arcuata的意思 grammographus flavicollis的意思 grammographus granulicollis的意思 grammographus kanoi的意思 grammographus notabilis的意思 grammographus submaculatus的意思 gram mol的意思 grammol的意思 gram molar的意思 grammol的意思 gram mole的意思 grammolecular的意思 grammolecular solution的意思 gram molecular solution的意思 gram molecular volume的意思 gram molecular weight的意思 grammolecule的意思 gram molecule的意思 gram molecule concentration的意思 gram molecule的意思 Grammont的意思 Grammont, Mt.的意思 Grammophon的意思 grammophons的意思