Contributed by Andrew Smith, September 2006
[=Heteroechinus Quenstedt, 1874, p. 370 (objective) ]
|Distribution||Middle and Upper Jurassic (Aalenian to Oxfordian), France.|
|Type||Heterocidaris trigeri Cotteau, 1860, p. 378, by original designation|
|Classification and/or Status||Cidaroidea, Cidaroida, Heterocidaridae.
Unfortunately only a plastercast of the type specimen has been located and examined, along with some interambulacral fragments. Its wide interambulacral plates with two subequal primary tubercles immediately distinguishes this taxon from other cidaroids.Cotteau, G. 1860. Note sur le genre Heterocidaris, nouveau type de la famille des Cidarides. Bulletin de la Societe geologique de France, serie 2 17, 378-381.