Mammal Fossils
Horse
Mesohippus
[Jaw Section with Teeth]

Oligocene

NEBRASKA
Photographed by Michael P. Klimetz
Photographed by Michael P. Klimetz
Oreodont
Merycoidodon
[Complete Skull in Matrix]

Oligocene

NEBRASKA
Photographed by Michael P. Klimetz
Camel
Hemiauchenia
[Partial Limb Bone in Matrix]

Pliocene

ARIZONA
Photographed by Michael P. Klimetz
Cave Bear
Ursus spelaeus
[Mandibular Molar]

Pleistocene

Ural Mountains
RUSSIA

Gift of Sara Popko
John Dewey High School Class of 2009
Photographed by Michael P. Klimetz
Cave Bear
Ursus spelaeus
[Mandibular Molar]

Pleistocene

Ural Mountains
RUSSIA

Gift of Sara Popko
John Dewey High School Class of 2009
Photographed by Michael P. Klimetz
Cave Bear
Ursus spelaeus
[Mandibular Molar Crown]

Pleistocene

Ural Mountains
RUSSIA

Gift of Sara Popko
John Dewey High School Class of 2009
Photographed by Michael P. Klimetz
Whale (Cetacean) Vertebrae

Miocene-Pliocene
Yorktown and Pungo River Formations

Lee Creek Mine
Aurora

Beaufort County
NORTH CAROLINA


Photographed by Michael P. Klimetz
Rabbit
Paleolagus haydeni
[Lower Jaw]

Oligocene
Brule Formation

Converse County
WYOMING

Photographed by Michael P. Klimetz
Rabbit
Paleolagus haydeni
[Lower Jaw]

Oligocene
Brule Formation

Converse County
WYOMING

Photographed by Michael P. Klimetz
Rabbit
Paleolagus haydeni
[Lower Jaw]

Oligocene
Brule Formation

Converse County
WYOMING

Photographed by Michael P. Klimetz
Pantodont
Coryphodon
[Molar]

Lower Eocene-Wasatchian

Powell
WYOMING

Photographed by Michael P. Klimetz
Horse
Eohippus
[M4 Molar]

Wilwood Formation
Eocene

WYOMING

Photographed by Michael P. Klimetz
Camel
Poebrotherium wilsoni
[Partial Jaw]

Oligocene

Orella Member
Brule Formation
White River Group

Sioux County
NEBRASKA

Photographed by Michael P. Klimetz
Camel
Poebrotherium wilsoni
[Partial Jaw]

Oligocene

Orella Member
Brule Formation
White River Group

Sioux County
NEBRASKA

Photographed by Michael P. Klimetz
Camel
Poebrotherium wilsoni
[Partial Jaw]

Oligocene

Orella Member
Brule Formation
White River Group

Sioux County
NEBRASKA

Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Complete Juvenile Skull]

Oligocene

Brule Formation
White River Group

Sioux County
NEBRASKA

Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Complete Juvenile Skull]

Oligocene

Brule Formation
White River Group

Sioux County
NEBRASKA

Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Complete Juvenile Skull]
Oligocene

Brule Formation
White River Group

Sioux County
NEBRASKA

Photographed by Michael P. Klimetz


Bison
[Distal End of Radius]

Pliocene-Blancan
Glens Ferry Formation

Oreana

Owyhee County
IDAHO
Photographed by Michael P. Klimetz


Bison
[Distal End of Radius]

Pliocene-Blancan
Glens Ferry Formation

Oreana

Owyhee County
IDAHO
Photographed by Michael P. Klimetz


Auroch
Bos primigenius primigenius
[Metatarsal]

Pleistocene

Dredged from North Sea

THE NETHERLANDS
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Leg Bone End - Humerus Proximal]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Leg Bone End - Humerus Proximal]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Leg Bone End - Humerus Proximal (Interior)]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Leg Bone End - Humerus Proximal (Interior)]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Leg Bone End - Humerus Proximal (Interior)]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Rhinoceras
Hyracodon nebraskensis
[Teeth in Upper (Maxillary) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Rhinoceras
Hyracodon nebraskensis
[Teeth in Upper (Maxillary) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Rhinoceras
Hyracodon nebraskensis
[Teeth in Upper (Maxillary) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Rhinoceras
Hyracodon nebraskensis
[Teeth in Upper (Maxillary) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Rhinoceras
Hyracodon nebraskensis
[Teeth in Upper (Maxillary) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Rhinoceras
Hyracodon nebraskensis
[Teeth in Upper (Maxillary) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
INTERPRETATION

Hyacodon nebraskensis
Mural by Charles R. Knight
Hydracodon nebraskensis
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Teeth in Lower (Mandibular) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Teeth in Lower (Mandibular) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Teeth in Lower (Mandibular) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Teeth in Lower (Mandibular) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Teeth in Lower (Mandibular) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Teeth in Lower (Mandibular) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Teeth in Lower (Mandibular) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
Photographed by Michael P. Klimetz


Oreodont
Merycoidodon culbertsoni
[Teeth in Lower (Mandibular) Jawbone]

Oligocene
White River Formation

Pennington County
SOUTH DAKOTA
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