|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Calcarea (calcareous sponge)
It was synonymized subjectively with Calcispongea by Zrzavy et al. (1998).
It was assigned to Metazoa by Edgecombe et al. (2011); to Porifera by Sepkoski (2002), Finks et al. (2004), Skovsted (2006) and Worheide et al. (2012); and to Euradiculata by Nielsen (2012).
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.