The Echinoid Directory

Contributed by Andreas Kroh, March 2008

Prandinia Vadet, 2000, p. 93

Diagnostic Features
  • Apical disc large, flattened and devoid of tubercles or ornament, but with distinct sutural pits. Gonopores opening sub-centrally on genital plates. Periproct lying on anterior-posterior axis and bounded by suranal plate and posterior three genital plates.
  • Ambulacra narrow with simple plating except close to the peristome
  • Ambulacral tubercles imperforate and crenulate. Interambulacral tubercles perforate and crenulate.
Distribution Late Jurassic, France and Germany.
Name gender feminine
Type Cidarites interpunctata Quenstedt, 1852, p. 576, by original designation.
Species Included Only the type species.
Classification and/or Status Carinacea, Calycina, Salenioida; stem group Saleniidae.

Subjective junior synonym of Pseudosalenia
Remarks Closely similar to Salenia and Hyposalenia, but distinguished from these two genera by having perforate interambulacral tubercles. Differing from Prosalenia and Pseudosalenia by its large apical disc without ornamentation and subcentral position of the gonopores.

Vadet, A. 2000. Un Salenioida primitif dans le Kimmeridgien de l'Ain. Bulletin de la Societe Academique du Boulonnais 4(4): 93-97.
Contributor comments:

Treated here as a junior subjective synonym of Pseudosalenia. The species is based on small individuals (15 mm test diameter) and in juveniles of Pseudosalenia the apical disc is proportionally larger. No substantial differences separate these taxa. [Andrew Smith, March 2008]