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Ringicula (Ringiculopsis)
Taxonomy
Ringiculopsis was named by Chavan (1947) [Sepkoski's age data: K Sn]. It is not extant.
It was reranked as Ringicula (Ringiculopsis) by Squires and Saul (2001).
It was assigned to Ringicula by Squires and Saul (2001); and to Cephalaspida by Sepkoski (2002).
It was reranked as Ringicula (Ringiculopsis) by Squires and Saul (2001).
It was assigned to Ringicula by Squires and Saul (2001); and to Cephalaspida by Sepkoski (2002).
Species lacking formal opinion data