Echinoidea

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Related to echinoids: ophiuroids
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Synonyms for Echinoidea

References in periodicals archive ?
Echinoid community structure and rates of herbivory and bioerosion on exposed and sheltered reefs.
Contradictory findings regarding behavioral cues, both among and within species and locales, make it difficult to develop a generalized model of echinoid aggregation and overgrazing.
Echinoid bioerosion and herbivory on Kenyan coral reefs: the role of protection from fishing.
15] signal for the five studied echinoids of hardground biotopes varied from 5.
The Scolicia burrows are interpreted as being inhabited by spatangoid echinoids (Scolicia; Fig.
The fossil contents include sponges, echinoids, bivalves, coralline algae, pelecypod which are typical of an open shelf environment.
There are poorly preserved fragments of sand dollar echinoids collected from this area in the Rio Bravo Collection (Molineux 2008) at the Texas Natural Science Center.
9:40 FAUJASIID ECHINOIDS IN THE UPPER CRETACEOUS OF NORTH AMERICA
The skeletal material is primarily composed of larger and small benthic foraminifera, such as small rotaliids and few porcellanaceous forms, fragments of echinoids, red algae, dasycladacean green algae, and fragments of rudists.
The tooth was neatly cemented within the calcarenite along with whole echinoids and the abundant calcareous nodules.
on the distance traveled by sperm before they encounter an unfertilized egg (in echinoids, Pennington 1985, Levitan 1991; starfish, Babcock et al.