10-million-year-long Mammal Layover in Mexico Primed the Pump for the Great American Biotic Interchange Between North and South America
Published in the journal Science, a new study by NHM researchers shows that Mexico acted as a biodiversity "holding pen" for 10 million years ahead of the Great American Biotic Interchange that opened the floodgates between North and South America 2.8 million years ago.
Meet Biggest Big Cat at the Tar Pits: The American Lion
Get up close and personal with the fiercest Ice Age Angeleno
