The Echinoid Directory

Family Pygaulidae Lambert, 1905, p. 13

Diagnosis	Cassiduloida with: petals weakly to strongly developed; ending gradational; phyllodes developed usually with inner and outer series; Periproct supramarginal to inframarginal.
Range	Early Cretaceous (Valanginian) to Palaeocene, Europe, North Africa.
Remarks	Distinguished from all other cassiduloids by having an olique peristome.

Diagnosis

Range

Early Cretaceous (Valanginian) to Palaeocene, Europe, North Africa.

Remarks

Distinguished from all other cassiduloids by having an olique peristome.