The Echinoid Directory

Paleoechinoneus Grant & Hertlein, 1938, p. 105

Diagnostic Features
  • Test ovate in outline, depressed in profile with rounded ambitus.
  • Apical system unknown.
  • Periproct unknown.
  • Ambulacra with pore-pairs flush and offset in lines of three adorally.
  • Interambulacra wide. Tuberculation of small uniform tubercles with slightly sunken areoles scattered over plates; dense uniform granulation. in between.
  • Peristome subcentral, oblique, a little depressed.
Distribution
Upper Cretaceous; Mexico.
Name gender masculine
Type
Paleoechinoneus hannai Grant & Hertlein, 1938, p. 105, by original designation.
Species Included
  • Only the type species.
Classification and/or Status

Irregularia; Echinoneoida, Conulidae.

Indeterminate; Most probably a subjective junior synonym of Globator Agassiz, 1840

Remarks

The two specimens on which Grant and Hertlein (1938) established this species and genus are very poorly preserved and incompletely known. They compared this taxon with Echinoneus, pointing out that it differed in having pore-pairs flush and offset in triads adorally. However, these characters are also seen in Globator, a widespread genus in the late Cretaceous, and there is nothing to distinguish them.

Grant, U. S. & Hertlein, L. G. 1938. The West American Cenozoic Echinoidea. Publications of the University of California at Los Angeles in Mathematical and Physical Sciences 2, 1-225.