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''Toxasteridae'' is an extinct family of
sea urchin Sea urchins or urchins () are echinoderms in the class (biology), class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal zone to deep seas of . They typically have a globular body cove ...
s. These slow-moving shallow infaunal deposit feeder-detritivores lived during the
Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...
period, from 145.5 to 61.7 Ma.


Genera

*'' Adytaster'' *'' Aphelaster'' *'' Douvillaster'' *'' Enallopneustes'' *'' Heteraster'' *'' Isaster'' *'' Isomicraster'' *'' Macraster'' *'' Mokotibaster'' *'' Palmeraster'' *'' Polydesmaster'' *'' Toxaster''


References

Spatangoida Cretaceous first appearances Cretaceous extinctions Prehistoric echinoderm families {{paleo-echinoidea-stub