A mollusk radiate from the Paleozoic time, Ambonychia bellistriata.

Ambonychia Mollusk

A mollusk radiate from the Paleozoic time, Ambonychia bellistriata.

Two ancient mollusks from the Carboniferous Age, the Productus Nebrascensis and the Athyris subtilita.

Ancient Mollusks

Two ancient mollusks from the Carboniferous Age, the Productus Nebrascensis and the Athyris subtilita.

An articulate radiate from the Paleozoic time, Homalonotus delphinocephalus.

Articulate Radiate

An articulate radiate from the Paleozoic time, Homalonotus delphinocephalus.

An articulate radiate from the Paleozoic time, Orthoceras junceum.

Orthoceras Articulate

An articulate radiate from the Paleozoic time, Orthoceras junceum.

An ancient articulate from the Paleozoic time, Pacops bufo from the Hamilton group.

Pacops Articulate

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.

Pentamerus Brachiopod

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.

Cyclonema Mollusk

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 enlarged and partly sectioned to show interior.

Fusulina Cylindrica

Fusulina cylindrica, a typical foraminiferal shell forming rocks in the later Paleozoic. A single shell…

Ganoids were ancient fish from the Paleozoic time. The image is of the Cephalaspis Lyellii.

Ganoid

Ganoids were ancient fish from the Paleozoic time. The image is of the Cephalaspis Lyellii.

Ganoids were ancient fish from the Paleozoic time. The image is of the Holoptychius.

Ganoid

Ganoids were ancient fish from the Paleozoic time. The image is of the Holoptychius.

"Block of Stone containing Graptolites. GRAPTOLITE. A specimen or a species of Paleozoic coelenterate organisms, commonly supposed to be hydrozoans, resembling the living sertularians." -Whitney, 1911

Graptolites in Stone

"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 the Archaeopteryx. The six-foot man is drawn to the same scale as the other animals.

Late Mesozoic Age Reptiles

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.

Reptiles of the late Paleozoic age

Some reptiles of the Late Paleozoic Age. The six-foot man is drawn to the same scale as the other animals.

A mollusk radiate from the Paleozoic time, Leptaena sericea.

Leptaena Mollusk

A mollusk radiate from the Paleozoic time, Leptaena sericea.

Some Mesozoic reptiles. Shown are the Brontosaurus, Stegosaurus, Pterodactyl, Camptosaurus, and the Diplodocus. The six-foot man is drawn to the same scale as the other animals.

Mesozoic Age Reptiles

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.

Goniatites Mollusk Fossil

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

An ancient mollusk from the Carboniferous Age, the Archimedes reversa.

Archimedes Mollusk

An ancient mollusk from the Carboniferous Age, the Archimedes reversa.

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

Goniatites Mollusk

An ancient mollusk from the Paleozoic time, Goniatites Marcellensis from the Hamilton group.

A mollusk radiate from the Paleozoic time, Orthis testudinaria.

Orthis Mollusk

A mollusk radiate from the Paleozoic time, Orthis testudinaria.

A mollusk radiate from the Paleozoic time, Orthis occidentalis.

Orthis Mollusk

A mollusk radiate from the Paleozoic time, Orthis occidentalis.

A mollusk radiate from the Paleozoic time, Orthis varica of the Niagara group.

Orthis Mollusk

A mollusk radiate from the Paleozoic time, Orthis varica of the Niagara group.

A mollusk radiate from the Paleozoic time, Platyceras angulatum from the Niagara group.

Platyceras Mollusk

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.

Pterinea Mollusk

A mollusk radiate from the Paleozoic time, Pterinea emacerata from the Niagara group.

An ancient radiate from the Carboniferous Age, the Actinocrinus proboscidialis.

Actinocrinus Radiate

An ancient radiate from the Carboniferous Age, the Actinocrinus proboscidialis.

A radiate from the Paleozoic time, Caryocrinus ornatus.

Caryocrinus Radiate

A radiate from the Paleozoic time, Caryocrinus ornatus.

A radiate from the Paleozoic time, Chaetetes lycoperdon.

Chaetetes Radiate

A radiate from the Paleozoic time, Chaetetes lycoperdon.

A radiate from the Paleozoic time, Favosites Niagarensis of the Niagara group.

Favosites Radiate

A radiate from the Paleozoic time, Favosites Niagarensis of the Niagara group.

A radiate from the Paleozoic time, Halysites catenulata.

Halysites Radiate

A radiate from the Paleozoic time, Halysites catenulata.

A radiate from the Paleozoic time, Lecanocrinus elegans.

Lecanocrinus Radiate

A radiate from the Paleozoic time, Lecanocrinus elegans.

An ancient radiate from the Carboniferous Age, the Lithostrotion Canadense.

Lithostrotion Radiate

An ancient radiate from the Carboniferous Age, the Lithostrotion Canadense.

A mollusk radiate from the Paleozoic time, Stictopora acuta.

Mollusk Radiate

A mollusk radiate from the Paleozoic time, Stictopora acuta.

A mollusk radiate from the Paleozoic time, Orthoceras junceum.

Mollusk Radiate

A mollusk radiate from the Paleozoic time, Orthoceras junceum.

An ancient radiate from the Carboniferous Age, the Pentremites pyriformis.

Pentremites Radiate

An ancient radiate from the Carboniferous Age, the Pentremites pyriformis.

A radiate from the Paleozoic time, Petraia corniculum.

Petraia Radiate

A radiate from the Paleozoic time, Petraia corniculum.

A radiate from the Paleozoic time, Zaphrentis bilateralis of the Clinton group

Zaphrentis Radiate

A radiate from the Paleozoic time, Zaphrentis bilateralis of the Clinton group

An ancient radiate from the Carboniferous Age, the Zeacrinus elegans.

Zeacrinus Radiate

An ancient radiate from the Carboniferous Age, the Zeacrinus elegans.

A mollusk radiate from the Paleozoic time, Raphistoma lenticularis.

Raphistoma Mollusk

A mollusk radiate from the Paleozoic time, Raphistoma lenticularis.

A mollusk radiate from the Paleozoic time, Rhynchotreta cuneata from the United States and Great Britain.

Rhynchotreta Mollusk

A mollusk radiate from the Paleozoic time, Rhynchotreta cuneata from the United States and Great Britain.

An ancient mollusk from the Paleozoic time, Spirifer mucronatus.

Sprifer Mollusk

An ancient mollusk from the Paleozoic time, Spirifer mucronatus.

An ancient mollusk from the Carboniferous Age, the Spirifer cameratus.

Spirifer Mollusk

An ancient mollusk from the Carboniferous Age, the Spirifer cameratus.

A mollusk radiate from the Paleozoic time, Strophomena rhomboidalis

Strophomena Mollusk

A mollusk radiate from the Paleozoic time, Strophomena rhomboidalis