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Ringicula (Ringiculocosta)
Taxonomy
Ringiculocosta was named as a genus. It is not extant.
It was reranked as Ringicula (Ringiculocosta) by Mandic et al. (2002).
It was assigned to Ringicula by Mandic et al. (2002); and to Cephalaspida by Sepkoski (2002).
It was reranked as Ringicula (Ringiculocosta) by Mandic et al. (2002).
It was assigned to Ringicula by Mandic et al. (2002); and to Cephalaspida by Sepkoski (2002).
Species lacking formal opinion data