†family Piraniidae Laubenfels 1955 (demosponge)

Demospongea - Protomonaxonida - Piraniidae

Parent taxon: Protomonaxonida according to R. M. Finks et al. 2004

Sister taxa: Choiidae, Halichondritidae, Hamptoniidae, Hazeliidae, Leptomitidae, Lobatospongia, Sollasellidae, Takakkawiidae, Tethyidae, Ulospongiellidae, Wapkiidae

Subtaxa: Moleculospina Pirania

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Ecology: stationary intermediate-level epifaunal suspension feeder

Distribution:

• Ordovician of Morocco (2 collections), the United Kingdom (1)

• Cambrian of Canada (16: Brithish Columbia, British Columbia)

Total: 19 collections including 21 occurrences

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