The Echinoid Directory

Miocidaris Doderlein, 1887 , p. 40

Diagnostic Features
  • Test with interambulacral plates more or less firmly sutured but with imbricate ambulacral/interambulacral suture.
  • Interambulacral plates not much wider than tall with denticulate adradial margin.
  • A primary tubercle dominates each plate with perforate mamelon and strongly crenulate platform. Areoles subcircular and incised. Scrobicular tubercles differentiated; scrobicular circles contiguous or narrowly separated in each series. Extrascrobicular tuberculation heterogeneous; best developed interradially.
  • Ambulacral zones, spines and lantern unknown.
Distribution
Triassic (?Lower, Upper), Europe, ?Pakistan.
Name gender feminine
Type
Miocidaris cassiani Bather 1909, p. 40 [name substituted for Cidaris klipsteini Desor, 1858, p. 4, non Cidaris klipsteini Marcou, in Agassiz & Desor, 1847] by original designation. Syntypes: BMNH 36512, 36513.
Species Included
  • M. cassiani Bather, 1909; Upper Triassic, Italy.
  • ?M. ampezzana Zardini, 1973; Carnian, Italy.
  • ?M. pakistanensis Link, 1955; Scythian, Pakistan.
Classification and/or Status

Cidaroida; stem group (miocidarids).

Indeterminate.

Remarks
It is unfortunate that the type species for this genus is based on just a couple of interambulacral fragments and is basically indeterminate. Until more complete material becomes available, it is best to treat this genus as indeterminate.

Doderlein, L. 1887. Die Japanischen Seeigel. I Thiel. Familie Cidaridae und Saleniidae. E. Schwiezerbartsche, Stuttgart. 59 pp.