The Echinoid Directory

Zbindenicidaris Vadet, 1991, p. 133

[=Philicidaris Vadet, 1991, p. 104, type species Cidaris blainvillei Desor, 1858.]

Diagnostic Features
  • Test height about 50% diameter.
  • Apical disc ca. 40% test diameter; no plating preserved; pentagonal in outline.
  • Interambulacra composed of 8-9 plates; smallest adapical plate in each zone with tubercle. Interambulacral plates a little wider than tall, with large primary tubercle. Mamelon relatively small and perforate; platform well developed and distinctly crenulate. Areoles circular at ambitus and aborally and separated; distinctly incised.
  • Ambulacral plating firmly bound to interambulacral plates.
  • Scrobicular tubercles differentiated. Extrascrobicular granules smaller and developed interradially and to a lesser extend adradially. Sutures not incised.
  • Ambulacra narrow, almost straight, the pore zones only weakly depressed and narrower than the perradial tuberculate zone. Pore-pairs non-conjugate, the two pores separated by a moderately wide and raised interporal partition. Ambital and adapical plating simple with single primary tubercle to each plate; the perradial zone very narrow with a single small secondary tubercle to each plate.
  • Adoral ambulacral tuberculation larger with an enlarged primary tubercle on every second plate (pseudobigeminate); tubercles perforate.
  • Perignathic girdle and lantern unknown.
  • Spines of type species not known for certain.
Distribution
Upper Triassic (Carnian) to Middle Jurassic, (Callovian), Europe.
Name gender feminine
Type
Cidaris toucasi Cotteau, 1875, p. 12, by original designation.
Species Included
Vadet (1991) included two species when establishing this genus:
  • Z. toucasi (Cotteau, 1875); Rhaetian, France
  • Z. varusensis (Cotteau, 1875); Bajocian, France.
Other taxa included here are:
Classification and/or Status

Cidaroida; Polycidaridae.

Remarks

Differs from Anisocidaris by having ambital and adapical ambulacral plating simple with uniformly sized marginal tubercles, but adoral plates with enlarged adoral tubercles developed on every second plate.

Vadet, A. 1991. Revision des "Cidaris" du Lias et du Dogger Europeens. Memoires de la Societe academique du Boulonnais 10, 1-176.