Map of North America during the Cenomanian age (96 million years ago) showing the four turtle families newly discovered at the Arlington Archosaur Site (AAS). The AAS fossil assemblage includes a ...
rence of benthic foraminifers after >700,000 yr of environmental exclusion from the benthic zone. There is a general decrease in benthic molluscan diversity. High-resolution geochemical and ...
About 100 million years ago, dinosaurs roamed a forest-covered Antarctica. Temperatures were about 50 degrees Fahrenheit, according to proxy records. Carbon dioxide was present in the atmosphere at ...
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