Nicholls, Elizabeth L.; Manabe, Makoto «Giant Ichthyosaurs of the Triassic—A New Species of Shonisaurus from the Pardonet Formation (Norian: Late Triassic) of British Columbia». Journal of Vertebrate Paleontology, vol. 24, 4, 2004, pàg. 838–849. DOI: 10.1671/0272-4634(2004)024[0838:GIOTTN]2.0.CO;2. ISSN: 0272-4634.
Nicholls, Elizabeth L.; Manabe, Makoto «Giant Ichthyosaurs of the Triassic—A New Species of Shonisaurus from the Pardonet Formation (Norian: Late Triassic) of British Columbia». Journal of Vertebrate Paleontology, vol. 24, 4, 2004, pàg. 838–849. DOI: 10.1671/0272-4634(2004)024[0838:GIOTTN]2.0.CO;2. ISSN: 0272-4634.