Two ancient mollusks from the Carboniferous Age, the Productus Nebrascensis and the Athyris subtilita.
An ancient articulate from the Paleozoic time, Pacops bufo from the Hamilton group.
A mollusk radiate from the Paleozoic time, Pentamerus oblongus, a brachiopod from the Clinton group.
A mollusk radiate from the Paleozoic time, Cyclonema cancellata from the Clinton group.
Fusulina cylindrica, a typical foraminiferal shell forming rocks in the later Paleozoic. A single shell…
"Block of Stone containing Graptolites. GRAPTOLITE. A specimen or a species of Paleozoic coelenterate…
Some Late Mesozoic reptiles. Shown are the Tyrannosaurus, Trachodon, Triceratops, Pterodactyls, and…
Some reptiles of the Late Paleozoic Age. The six-foot man is drawn to the same scale as the other animals.
Some Mesozoic reptiles. Shown are the Brontosaurus, Stegosaurus, Pterodactyl, Camptosaurus, and the…
An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.
An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.
A mollusk radiate from the Paleozoic time, Platyceras angulatum from the Niagara group.
A mollusk radiate from the Paleozoic time, Pterinea emacerata from the Niagara group.
An ancient radiate from the Carboniferous Age, the Actinocrinus proboscidialis.
A mollusk radiate from the Paleozoic time, Rhynchotreta cuneata from the United States and Great Britain.