Echinoidea

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Related to echinoids: ophiuroids
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Echinoidea - sea urchins and sand dollarsEchinoidea - sea urchins and sand dollars  
Echinodermata, phylum Echinodermata - radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
sea urchin - shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
Exocycloida, order Exocycloida - flat sea urchins
order Spatangoida, Spatangoida - heart-shaped sea urchins
class - (biology) a taxonomic group containing one or more orders
References in periodicals archive ?
9:40 FAUJASIID ECHINOIDS IN THE UPPER CRETACEOUS OF NORTH
Utilization of marine plants and their constituents by bacteria isolated from the guts of echinoids (Echinodermata).
The marine organisms commonly associated with the carbonate materials deposition include; bivalves, gastropods, echinoids, crinoids etc [3].
The fossil contents include sponges, echinoids, bivalves, coralline algae, pelecypod which are typical of an open shelf environment.
Molluscs of interest for fisheries: culture and reproductive strategies of bivalves and echinoids.
Similarly, small echinoids are common in the unit immediately below the Carycorbula beds at this locality, although they belong to the species Loriolia rosana (Finsley, 1989) rather than Salenia texana.
Optimal egg size in marine invertebrates: theory and phylogenetic analysis of the critical relationship between egg size and development time in echinoids.
There are no published reports to our knowledge, however, examining various preservation techniques for macroalgal food sources of echinoids (either for feeding juveniles or adults).
In fact, the few articles available on transplant experiments with other echinoids reported contrasting results: Tertschnig (1989) and Yusa and Yamamoto (1994) did not show any effect of the habitat of urchin origin on the behavior, whereas Dumont et al.
Also for other echinoids there seems to be an inverse relationship between movement and food availability (S.