Ice age era bones recovered from underwater caves in Mexico

When the Panamanian land bridge formed around 3 million years ago, Southern Mexico was in the middle of a great biotic interchange of large animals from North and South America that crossed the continents in both directions. Ice age era bones recovered from underwater caves in Mexico include rare human remains alongside saber-tooth cats, giant sloths, short-faced bears and elephant-like beasts, report investigators.
Paleontology News — ScienceDaily