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The Echinoid Directory

Globator Agassiz, 1840, p. 16

[=Nucleopyrina Pomel, 1883, p. 53, type species Pyrina cylindrica Gras, 1848; =Pseudopyrina Lambert, 1908, p. 49, type species Nucleolites ovulum Lamarck, 1816; =Cluniaster Jeannet, 1934, p. 6, type species Cluneatser rhenanus Jeannet, 1938; ?=Paleoechinoneus Grant & Hertlein, 1938, type species Paleoechinoneus hannai Grant & Hertlein, 1938; ?Globoholectypus Aziz, 1991, p. 19, type species Globoholectypus globus Aziz, 1991 ]

Diagnostic Features
  • Test subglobular, almost as tall as wide, with rounded ambitus and slightly flattened base.
  • Apical system central, tetrabasal with genital plates all in contact, the posterior genital plates abutting and the posterior ocular plates abutting behind the posterior genitals (unknown in type species).
  • Periproct large, longitudinally elongate and pointed adapically; marginal in position.
  • Ambulacra relatively narrow; pore-pairs uniserial aborally and at ambitus, becoming offset in triads adorally. Plating pyrinoid throughout (not known for type species).
  • Interambulacra wide. Tuberculation of small uniform primaries with slightly sunken areoles scattered over plates, and dense uniform granulation in between. No oral/aboral differentiation. No sutured granules.
  • Peristome subcentral, weakly to strongly oblique, a little depressed (not known for type species).
  • No perignathic girdle or lantern; spines unknown.
Distribution
Cretaceous (Aptian - Maastrichtian), America, Europe, North Africa, Middle East, India, Asia
Name gender masculine
Type
Globator nucleus Agassiz, in Desor, 1842, p. 30, by original designation.
Species Included
Classification and/or Status

Irregularia; Echinoneoida, Conulidae.

Presumably paraphyletic by exclusion of Adelopneustes.
Remarks

Distinguished from Conulus by having a large periproct at or above mid-height, not a small inframarginal periproct.

Agassiz, L. 1840. Catalogus systematicus Ectyporum Echinodermatum fossilium Musei Neocomiensis, secundum ordinem zoologicum dispositus; adjectis synonymis recentioribus, nec non stratis et locis in quibus reperiuntur. Sequuntur characteres diagnostici generum novorum vel minus cognitorum, 20 pp. Oliv. Petitpierre, Neuchâtel.

Smith, A. B. & Jeffery, C. H. 2000. Maastrichtian and Palaeocene Echinoids: a key to world faunas. Special Papers in Palaeontology 63, 1-404.