The Echinoid Directory

Cardabia Foster & Philip, 1978, p. 798

Diagnostic Features
  • Test ovate with no anterior sulcus; posterior face truncate.
  • Apical disc with three gonopores (no gonopore on genital plate 2).
  • Ambulacra all similar; flush; pore-pairs rudimentary; apetaloid.
  • Peristome circular and closer to the centre than to the anterior border; not depressed.
  • Plastron plating orthosternous with labral plate followed by a single large sternal plate then a pair of small, symmetical episternal plates.
  • Rostral plate present.
  • Periproct marginal, ovate.
  • Aboral tuberculation fine.
  • Subanal fasciole present surrounding rostral plate.
Distribution
Early Tertiary (Palaeocene) of Western Australia.
Name gender feminine
Type
Cardabia bullarensis Foster & Philip, 1978, p. 798, by original designation.
Species Included
  • Only the type species
Classification and/or Status

Holasteroida, Meridosternata, Urechinina, Corystusidae.

Monotypic.

Remarks

Differs from Basseaster, Garumnaster and Plexechinus in having a rostral plate. Distinguished from other Corystidae by the absence of a frontal groove and in having three not four gonopores. Corystus has identical plating, but has four gonopores, and grows to a much larger size with much better developed aboral pore-pairs and a more sunken peristome.

Foster, R. J. & Philip, G. M. 1978. Tertiary holasteroid echinoids from Australia and New Zealand. Palaeontology 21, 791-822.