Early Hettangian ammonites and radiolarians from the Queen Charlotte Islands, British Columbia and their bearing on the definition of the Triassic-Jurassic boundary
L. M. Longridge,
E. S. Carter,
P. L. Smith, and
H. W. Tipper
2007
Article
Palaeogeography, Palaeoclimatology, Palaeoecology
244:142-169
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