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Cretaceous Dinosaur Ornithopod tracks. Penny for scale. Dakota Formation, Colorado. (171123-31)
fossilized Eocene Ginkgo leaf, Republic, Washington (IP16-3782)
from Bright Angel Shale in the Grand Canyon, Arizona. (F-26)
Cambrian Lingula brachiopods. F-30
Pennsylvanian seed fern in shale.. Approx 10 cm across. (F-21)
Triassic fossilized tree. Petrified Forest National Park, Arizona (F-15).
Dinosaur National Monument, Utah-Colorado. (F-13)
Eocene shark tooth (Otodus obliquus). Morocco. F-10.
Fossilized Sand Dollar (Eocene). Scutella. (30-12787)
Crinoid (upper Silurian) Scyphocrinites sp. Photo is about 15 cm across. (30-12776)
Fossil and modern ginkgo leaves (square). (2Fos-A)
Anomalocaris, a feeding appendage of a soft-bodied fossil of the Cambrian Burgess Shale. (120708-43)
Ogygopsis klotzi, an Olenoides trilobite from the Cambrian Burgess Shale, British Columbia, Canada. (120708-11)
Petrified wood in volcanic tuff. (110918-5)
Devonian coral, Alberta, Canada (110918-20)
Oligocene paleosols in John Day Fossil Beds National Monument. (110805-141)
This coral, and others like it, came from the ancient Tethys Ocean, which existed in the far western Pacific during the Permian. It is now found in limestones of Oregon’s accreted terranes. (110428-9)
Proterozoic Helena Formation stromatalite. (Image ID# 090717-33)