| Literature DB >> 11537491 |
Abstract
Analysis of the end-Cretaceous mass extinction, based on 3514 occurrences of 340 genera of marine bivalves (Mollusca), suggests that extinction intensities were uniformly global; no latitudinal gradients or other geographic patterns are detected. Elevated extinction intensities in some tropical areas are entirely a result of the distribution of one extinct group of highly specialized bivalves, the rudists. When rudists are omitted, intensities at those localities are statistically indistinguishable from those of both the rudist-free tropics and extratropical localities.Entities:
Keywords: NASA Discipline Exobiology; NASA Discipline Number 52-40; NASA Program Exobiology; Non-NASA Center
Mesh:
Year: 1993 PMID: 11537491 DOI: 10.1126/science.11537491
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728