Extinct ice age toad found at La Brea Tar Pits rewriting Los Angeles’ climate history
Fossils from La Brea Tar Pits belong to a newly identified extinct spadefoot toad, the first extinct amphibian recorded at the site. The toad’s anatomy, larger body size and disappearance offer clues about environmental changes near the end of the Ice Age. A second fossil shows that Mexican burrowing toads once lived nearly 2,500 kilometers north of their closest populations today. A toad smaller than a human palm has rewritten part of Los Angeles’ Ice Age story. Fossils from La Brea Tar Pits belong to a previously unknown species, revealing how much the region’s climate and wildlife changed. The extinct spadefoot toad, named Spea labreae, is the first extinct amphibian identified from Rancho La Brea. Only one other extinct Pleistocene amphibian has been reported in North America, a tree frog from Florida. Dr. Alberto Cruz was reviewing La Brea’s amphibian and reptile collections when unusual bones caught his attention. Location of Rancho La Brea (star symbol) in southern California, U.S.A. (CREDIT: Dr. Alberto Cruz et al, Journal of Vertebrate Paleontology) Old bones reveal an unfamiliar …








