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Prionocidaris Agassiz 1863 (pencil urchin)

Echinoidea - Cidaroida - Cidaridae

PaleoDB taxon number: 32828

Parent taxon: Cidaridae according to S. K. Donovan et al. 2005

Sister taxa: Cidarinae, Cidarini, Cidaris, Rhabdocidarinae, Stereocidarinae, Triassicidaris

Subtaxa: Prionocidaris emiratus, Prionocidaris morgani, Prionocidaris pseudopistillum

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Type: Cidarites pistillaris

Ecology: slow-moving low-level epifaunal grazer-omnivore