File:Pelagic stingray monterey.jpg - Wikipedia
CSIRO PUBLISHING Marine and Freshwater Research
Pelagic stingray • Pteroplatytrygon violacea • Fish sheet
FRESHWATER STINGRAYS OF THE GREEN RIVER FORMATION OF WYOMING
FRESHWATER STINGRAYS OF THE GREEN RIVER FORMATION OF WYOMING
Pelagic Stingray - Pteroplatytrygon violacea
Shark News, Issue 07
Pteroplatytrygon violacea – Discover Fishes
Frontiers Reducing Data Deficiencies: Preliminary Elasmobranch