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ambulacral plating simple throughout; no pyrinoid plating;
periproct small, circular, positioned towards the posterior of the oral surface.
Range
Cretaceous (Albian-Maastrichtian), Europe.
Remarks
Differs from Conulidae by having entirely simple ambulacral plating. Echinoneidae also have strictly uniserial pore-pairs but have a large, oral periproct.
Echinogalerus has an oblique peristome with the long axis along amb. V - Iamb. 3 and ambulacra subpetaloid aborally, but has similar simple ambulacral plating.