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The Echinoid Directory

Echinoglyphus Gray, 1852, p. 37

[=Moulinia L. Agassiz, 1841, p. 139, type species Scutella cassidulina Desmoulins, 1837, p. 78; = Moulinsia Agassiz, 1847 (non Grateloup, 1841); =Desmoulinaster Lambert & Thiery, 1914, p. 294, type species Scutella cassidulina Desmoulins, 1837, p. 78 ]

Diagnostic Features
  • Test flat with flat base and relatively sharp margin; domed centrally on upper surface.
  • Apical disc with five gonopores.
  • Petals weakly bowed and converging distally, but remaining open.
  • Ambulacral and interambulacral zones of similar width at ambitus.
  • Pores extend onto interambulacral plates.
  • Five well-marked ambulacral notches or lunules, and an anal lunule in the posterior interambulacrum.
  • Food grooves bifurcating immediately distal to the basicoronal plates and become highly branched distally.
  • Periproct opening at inner contact between the first paired post-basicoronal plates; positioned on inner lip of anal lunule.
  • Paired interambulacra always disjunct, separated by first pair of post-basicoronal ambulacral plates. The posterior interambulacrum usually continuous, but occasionally with small gap between basicoronal and first post-basicoronal pair of plates.
  • Internal partitioning extremely dense and spongiform.
Distribution
  • Pliocene to Recent, Caribbean, south eastern USA and north eastern South America.
Name gender masculine
Type
Echinoglyphus frondosus Van Phelum [=Scutella emarginatus Leske, 1778] by monotypy.
Species Included
  • Only the type species.
Classification and/or Status

Clypeasteroida; Scutellina; Scutelliformes; Scutellidea; Mellitidae.

Subjective junior synonym of Encope.
Remarks
Mortensen, T. 1948. A Monograph of the Echinoidea IV.2 Clypeasteroida. C. A. Reitzel, Copenhagen.

Gray, J. E. 1852. Proceedings of the Zoological Society, 19, p. 37.