The Paleontology of North America
Introduction
Time and Space
Fossil Gallery
Diatoms from North America
See images from the:
Quaternary
Tertiary
Cretaceous
Jurassic
Triassic
Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian
Precambrian
Actinoptychus heliopelta
From the Tertiary in Maryland
© 1995 UCMP
Sceptroneis caduceus
From the Tertiary in Maryland
© 1995 UCMP
Unknown diatom (cingulum)
From the Tertiary in California
© 1997 UCMP