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Citation: Pd. Ward et al., Sudden productivity collapse associated with the Triassic-Jurassic boundary mass extinction, SCIENCE, 292(5519), 2001, pp. 1148-1151

Authors: Smith, PL Tipper, HW Ham, DM

Citation: Pl. Smith et al., Lower Jurassic Amaltheidae (Ammonitina) in North America: Paleobiogeography and tectonic implications, CAN J EARTH, 38(10), 2001, pp. 1439-1449

Authors: Palfy, J Mortensen, JK Carter, ES Smith, PL Friedman, RM Tipper, HW

Citation: J. Palfy et al., Timing the end-Triassic mass extinction: First on land, then in the sea?, GEOLOGY, 28(1), 2000, pp. 39-42