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,p.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,p.838-849. DOI: 10.1671/0272-4634(2004)024[0838:GIOTTN]2.0.CO;2. ISSN: 0272-4634.