Fish are the most abundant of vertebrate fossils found at Florissant Fossil Beds.
Fossil birds are rare at Florissant. The three species illustrated here have been found in the ancient lake beds.
National Museum of Natural History, USNM-11955
A small variety of mammals have been discovered at Florissant Fossil Beds.
Did You Know?
Most fossils in the monument are from the late Eocene (34.07 million years ago), but a tooth and jaw fragment from a much younger mammoth have also been found. The fossils are from the Pleistocene Epoch and are at least 50,000 years old.