Los Angeles has a rich fossil history right in our own backyard,
and high atop the Pico Formation (a ~2 million year old stratigraphic unit)
you can pluck shark (and other vertebrate!) teeth right
out of the mountainside. Fun thought experiment: Why (and how!?)
are there sharkteeth in the top of a mountain?
In this photo, Natural History Museum paleontologist Lindsay Walker takes a data sample on a recent field dig working alongside the Southern California Paleontological Society to establish the biodiveristy of L.A's fossil record during the Pliocene.