|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Bivalvia - Protobranchia - Nuculanidae
It was recombined as Nuculana semen by Conrad (1865); it was recombined as Leda semen by de Gregario (1890) and Harris (1919); it was recombined as Calorhadia semen by Palmer and Brann (1965) and Kosnik (2002).
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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.