The Echinoid Directory

Contributed by Andrew Smith, August 2011

Micropsis Cotteau, in Cotteau & Leymerie 1856, p. 326

Diagnostic Features
  • Test rounded and inflated with rounded ambitus
  • Apical disc narrow; plating (in type species) unknown
  • Ambulacral compound plates with four elements; pore-pairs in  arcs throughout. Single primary tubercle on adapical and adoral compound plates but two subequal tubercles on ambital plates.
  • Interambulacral plates wide and short  with central primary tubercle and slightly smaller secondary tubercles on adradial and interradial sides; remainder of plate with granules
  • All tubercles imperforate and crenulate.
  • Peristome small
Distribution The type species comes from the late Cretaceous (Senonian) of southern France
Type Micropsis desori Cotteau, in Cotteau & Leymerie, 1856, p. 326 by monotypy.
Species Included Lambert & Thiery (1911, p. 220) include a number of other species.
Classification and/or Status Stirodonta, Incertae sedis
Remarks Cotteau, G. & Leymerie * 1856. Catalogue des echinides fossiles des Pyrennees. Bulletin de la Societe geologique de France Serie 2, 13, 319-355.

Cotteau, G. 1862-1867. Paleontologie francaise. Terrain Cretace, Tome 7. Echinides reguliers. G. Masson, Paris.