Olivancillaria teaguei Klappenbach, 1964

Distribution: Temperate South America realm. Warm Temperate Southwestern Atlantic province. From Chuí (33°44’S; 53°21’W), Rio Grande do Sul State, Brazil to La Coronilla (33°53’S;53°30’W), Rocha Department, Uruguay, usually intertidal or in the surf zone (Teso & Pastorino, 2011: 24).

The species is listed on the red  list of endangered species (critical) of Bazil (Junqueira Subirá, 2016).

RV 2002. Brazil, Rio Grade do Sul, Barra do Chui, on sand, shallow water, February 1988. Scale bar is 1 cm.