|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Strophomenata - Productida - Echinoconchidae
It was reranked as Productus (Echinoconchus) by Chao (1931).
It was assigned to Productus by Chao (1931); to Echinoconchini by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
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.