| Author: | Gervais and d'Orbigny, 1844. |
| Citation: | Bull. Sci. Soc. Philom. Paris, 1844: 39. |
| Common Name: | Franciscana |
| Type Locality: | Uruguay, "qui a été pris ŕ Montevideo" = mouth of the Rio de La Plata near Montevideo. |
| Distribution: | Brazil to Argentina: coastal waters from Doce River, Regencia, Espírito Santo to Peninsula Valdez, including the Rio de la Plata. |
| Status: | CITES – Appendix II; IUCN – Data Deficient, except for the Rio Grande do Sul/Uruguay subpopulation, which is Vulnerable. |
| Comments: | Reviewed by Brownell (1989). |
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