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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. 2004, 24 (4): 838. ISSN 0272-4634. doi:10.1671/0272-4634(2004)024[0838:GIOTTN]2.0.CO;2.
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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. 2004, 24 (4): 838. ISSN 0272-4634. doi:10.1671/0272-4634(2004)024[0838:GIOTTN]2.0.CO;2.