Definition of Euechinoid. Meaning of Euechinoid. Synonyms of Euechinoid

Here you will find one or more explanations in English for the word Euechinoid. Also in the bottom left of the page several parts of wikipedia pages related to the word Euechinoid and, of course, Euechinoid synonyms and on the right images related to the word Euechinoid.

Definition of Euechinoid

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Meaning of Euechinoid from wikipedia

- modern cidaroida (pencil urchins), and the ancestor that gave rise to the euechinoids. By the upper Tri****ic, their numbers increased again. Cidaroids have...
- majority of species died out during the Mesozoic, as the more advanced euechinoid sea urchins became common. Today, only a single order, the Cidaroida,...
- diverse during the Mesozoic, and represents the oldest surviving order of euechinoid sea urchins. They are distinguished from other sea urchins by the presence...
- organism from the standpoint of developmental and evolutionary biology. In euechinoid embryonic development, e.g. in the purple sea urchin, the micromeres comprise...
- suggesting it arose some time before the divergence of cidaroids and euechinoids over 268 million years ago. Decker GL, Lennarz WJ. (1988). "Skeletogenesis...