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Sphenaulax Zittel 1877 (glass sponge)

Hexactinellida - Innaecoeliida - Craticulariidae

PaleoDB taxon number: 3925

Synonym: Calycospongia Wu and Xiao 1989 (taxon 3953)

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

Sister taxa: Craticularia, Dictyonocoelia, Pycnocalyptra, Reticraticularia

Subtaxa: Sphenaulax costata, Sphenaulax globosa, Sphenaulax infundibuliforma, Sphenaulax irregularis, Sphenaulax piriformis, Sphenaulax pliopetala, Sphenaulax subargillaceus

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Ecology: stationary intermediate-level epifaunal suspension feeder