Turns out that Californian mastodons (such as those from La Brea) are a different species from those on the rest of the continent! https://t.co/iCqKtNjROA
Published today: Mammut pacificus sp. nov., a newly recognized species of mastodon from the Pleistocene of western North America https://t.co/q5yAw3fxJp https://t.co/xGbY0JyJFj