Unusual Timeline
Cambrian
Ordovician
Silurian
Cameroceras
Tanystropheus
Devonian
Carboniferous
Meganeurid
Basilosaurus
Smilodon
Permian
Triassic
Jurassic
Cretaceous
Paleocene
Dimorphodon
Eocene
Deinonychus
Oligocene
Miocene
Pliocene
Pleistocene
Holocene