The Echinoid Directory

Pseudopatagus Pomel, 1885 , p. 18

Diagnostic Features
  • Test ovate with very faint anterior sulcus; depressed in profile with keeled sternum towards rear
  • Apical disc ethmophract with four gonopores
  • Anterior ambulacrum narrow, with small, undifferentiated pore-pairs
  • Paired ambulacra petaloid aborally; petals relatively short and bowed; closed or almost closed distally. Perradial zone wide. Anterior column of pore-pairs in anterior petals reduced adapically. Anterior petals almost at 180 degrees.
  • Peristome D-shaped; downward facing
  • Labral plate elongate, extending to second ambulacral plate. Sternal plates triangular; episternal platres strongly contracted to posterior
  • Periproct occupies most of short truncate posterior face
  • Subanal fasciole present, shield-shaped
  • Peripetalous fasciole thin and present around posterior part of test
  • Large primary tubercles developed inside peripetalous fasciole. Areole slightly depressed adapically; tubercles crenulate
Distribution
Eocene, Algeria
Name gender masculine
Type
Pseudopatagus cruciatus, Pomel, 1885, p. 18, by original designation
Species Included
  • Only the type species
Classification and/or Status

Spatangoida, Micrasterina, Maretiidae

Subjective junior synonym of Eupatagus Agassiz, 1847

Remarks
According to Lambert & Thiery (1920, p. 450) this taxon was set up because of an error of observation, and Pomel later (1883) dropped any mention of this taxon. It does not differ from Eupatagus in any significant details.

Pomel, A. 1885. Les echinides du Kef Ighoud. Materiaux pour la Carte geologique de l'Algerie, Serie 1 1, 1-31.