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Non-Dinosaurian Lower Vertebrate Across the Cretaceous Tertiary Boundary in Northeastern Montana (University of California publications in geological sciences :)
NonDinosaurian Lower Vertebrate Across the Cretaceous Tertiary Boundary in Northeastern Montana - University of California publications in geological sciences : Author:Laurie J Bryant This study presents current data on vertebrate survival and extinction across the Cretaceous-Tertiary boundary in Montana. Nearly all the common taxa of reptiles (except dinosaurs), amphibians, and fish survived the end of the Cretaceous Period; extinctions were concentrated among rare groups and those found in near-shore habitats. The autho... more »r concludes that ocean regression and climatic deterioration may explain these selective extinction patterns better than catastrophic hypotheses.« less