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The Echinoid Directory

Ananchytes Lamarck, 1816, p. 23

[=Ananchitis Lamarck, 1801, p. 347 (non Ananchytis Mercati, 1717)]

Diagnostic Features
  • Test ovate with flat base and domed upper surface; no anterior sulcus.
  • Apical disc central, elongate; relatively large; with four gonopores.
  • All ambulacra flush, with identical, small, circumflexed pore-pairs adapically.
  • Plastron meridosternous, with a single sternal plate in contact with the labrum. Subsequent plates biserial.
  • Periproct inframarginal to oral.
  • No enlarged primary tubercles aborally.
  • No fascioles.
Distribution
Upper Cretaceous; Europe, central Asia.
Name gender unknown
Type
Echinocorys ovatus Leske, 1778, p. 69, by original designation.
Species Included
A widely used name in the old literature.
Classification and/or Status

Holasteroida; Meridosternata; Echinocorythidae.

Subjective junior synonym of Echinocorys Leske, 1778.
Remarks
Identical in all details of test structure to Echinocorys. Differs only in having a more rounded profile.