Found 1 items, similar to Micraster.
English → English (gcide) Definition: Micraster Micraster \Mi*cras"ter\, n. [NL., fr. Gr. mikro`s small + ? star.] (Paleon.) A genus of sea urchins, similar to Spatangus, abounding in the chalk formation; -- from the starlike disposal of the ambulacral furrows. [1913 Webster]