A reconstruction of prehistoric temperatures for some of the oldest archaeological sites in North America

Complete sabertooth tiger skull from North American Midcontinent shows Smilodon males weighed ≥300 kg as adults and were competent hunters by 2-3 years old. C14 dating of specimen helps narrow extinction of species to 13,285 cal B.P. - 11,785 cal B.P.

1,000-Plus Years of Tree Rings Confirm Unprecedented Nature of 2021 Western North America Heat Wave

Oldest Ichthyosaur Known to Science Discovered on Remote Arctic Island