Definition of Echinoid. Meaning of Echinoid. Synonyms of Echinoid

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

Definition of Echinoid

Echinoid
Echinoid E*chi"noid, a. [Echinus + -oid.] (Zo["o]l.) Of or pertaining to the Echinoidea. -- n. One of the Echinoidea.

Meaning of Echinoid from wikipedia

- habitats, from rocky s****s to hadal zone depths. The fossil record of the Echinoids dates from the Ordovician period, some 450 million years ago. The closest...
- The Gnathostomata are a superorder of sea urchins, including the familiar sand dollars. Gnathostomatans are irregular in shape, but unlike other irregular...
- Echinoid fossils are the fossilised remains of sea urchins, spiny marine invertebrates that live on the seabed. Humans have been interested in these fossils...
- Melonites is an extinct genus of sea urchin from the family Palaechinidae. Species belonging to this genus lived during the late Mississippian (Meramecian)...
- inhabits littoral regions of the Atlantic Ocean. As a member of the basal echinoid order Cidaroida, its morphological, developmental and molecular genetic...
- Irregularia is an extant infraclass of sea urchins that first appeared in the Lower Jur****ic. These particular sea urchins are distinguished from other...
- Generalized pedicellaria of an (a) asteroid and (b) echinoid...
- prehistoric echinoids is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be echinoids, excluding...
- is a geologic formation in Jamaica. It preserves ammonite, bivalve and echinoid fossils dating back to the Late Santonian stage of the Cretaceous period...
- fossils found in this sequence include the brachiopod Terebratulina and the echinoid Conulus. The former Upper Chalk by comparison is softer than the underlying...