Clypeastern.
Zoology.
A genus of echinoid Echinoderms, allied to the common sea urchin, but having mouth and vent both below.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > subphylum Eleutherozoa > class Echinoidea > order Clypeastroidea > member of > genus or member of genus Clypeaster
Clypeaster1836
clypeastroid1877
1836–9 Todd's Cycl. Anat. & Physiol. II. 33/2 In Clypeaster the shell is divided interiorly by vertical calcareous partitions.
Derivatives
clypeˈastroid adj. and n.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > subphylum Eleutherozoa > class Echinoidea > order Clypeastroidea > member of > genus or member of genus Clypeaster
Clypeaster1836
clypeastroid1877
1877 T. H. Huxley Man. Anat. Invertebrated Animals ix. 574 The flattened Clypeastroid, Scutella.
This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2022).
<
n.1836