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Joseph Dinkel - Untitled
Joseph Dinkel - Untitled
Joseph Dinkel - Untitled
Osteologie du megatherium / Dalton, del. ; Coutant, sculpt.

Osteologie du megatherium / Dalton, del. ; Coutant, sculpt.

Fossil skeleton of sloth discovered in South America that proved species could become extinct. Illus. in: Recherches sur les ossemens fossiles / Georges Cuvier. Third ed. Paris : G. Dufour et E. d'Ocagne, 1825,... More

John Martin - The country of the Iguanodon
Joseph Dinkel - The Iguanodon vertebrae
Joseph Dinkel - Part of Sacrum of the Hyleoesauris?.
Joseph Dinkel - Scapula , coracoid, and vertebrae of the Iguanodon
Joseph Dinkel - The vertebrae of the Iguanodon
Joseph Dinkel - Sacrum of the Iguanodon
Joseph Dinkel - Dorsal dermal spine of the Hyloeosaurus
Charles Doolittle Walcott (1850-1927) family at "Olmsted," Provo, Utah

Charles Doolittle Walcott (1850-1927) family at "Olmsted," Provo, Utah

Description: Paleontologist and fourth Smithsonian Secretary Charles Doolittle Walcott (1850-1927) often took his family along on collecting trips. This photograph was taken around 1907 when the family stopped ... More

Joseph Dinkel - Dinosauria Iguanodon
National parks: Trilobite - public domain image

National parks: Trilobite - public domain image

"Ehmania weedi" is an extinct group of arthropods known as a trilobite that lived during the Cambrian. Fossils of Ehmania have been found at Yellowstone National Park, Wyoming.

Joseph Dinkel - Untitled
Mildred Adams Fenton (1899-1995)

Mildred Adams Fenton (1899-1995)

Description: Mildred Adams Fenton (1899-1995) trained in paleontology and geology at the University of Iowa. She coauthored dozens of general science books with her husband, Carroll Lane Fenton, including Reco... More

Multiple trilobite fragments fossilized in the same rock

Multiple trilobite fragments fossilized in the same rock

USNM_35227 (pictured) and USNM_35225: Multiple trilobite fragments are fossilized in the same rock, these are commonly known as hash beds. "Hash" is an indicator of a near-shore environment, where waves could h... More

Gustav Arthur (1902-2000) and Josephine Cooper

Gustav Arthur (1902-2000) and Josephine Cooper

Description: G. Arthur (Gustav Arthur) Cooper (1902-2000) and his wife, Josephine Cooper, are shown here at work in his office in the Division of Invertebrate Paleontology, United States National Museum, now th... More

Division of Paleontology, Nat. Museum, [Washington, D.C.]
John Day Fossil Beds National Monument - Rose family
Scale Trees - geologic resources division

Scale Trees - geologic resources division

Lepidodendron sp. is an early complex plant, sometimes called a scale tree. It lived during the Late Paleozoic. Fossils of Lepidodendron have been found at Mammoth Cave National Park, Kentucky, and New River Go... More

John Day Fossil Beds National Monument - Quercus sp.
John Day Fossil Beds National Monument - Alnus sp.
John Day Fossil Beds National Monument - Abies sp.
Fresh-Water Ray

Fresh-Water Ray

"Heliobatis radians" is a prehistoric stingray which lived in fresh water lakes during the Eocene. Fossils of "Heliobatis" have been found in rocks within and around Fossil Butte National Monument, Wyoming.

National parks: Pseudaeluris - public domain image
National parks: Eusmilis - public domain image

National parks: Eusmilis - public domain image

Eusmilis, a nimravid that lived in the Turtle Cove about 29 million years ago

John Day Fossil Beds National Monument - Ulmus sp.
John Day Fossil Beds National Monument - Patriofelis ferox

John Day Fossil Beds National Monument - Patriofelis ferox

Cat-like predator in the Clarno Assemblage

John Day Fossil Beds National Monument - Zaisanamynodon protheroi
John Day Fossil Beds National Monument - Amebelodon sp.

John Day Fossil Beds National Monument - Amebelodon sp.

Amebelodon sp., a four tusked elephant creature from genus Gomphotheriidae

National parks: Aphelops - public domain image
John Day Fossil Beds National Monument - Hypertragulus sp.
John Day Fossil Beds National Monument - Telataceras radinskyi
Amphicyon and Miolabis

Amphicyon and Miolabis

Amphicyon preying on Miolabis

Daphoenine n. sp.

Daphoenine n. sp.

New species of beardog

John Day Fossil Beds National Monument - Miohippus annectens
John Day Fossil Beds National Monument - Dawn redwood
Sauropod Dinosaur - geologic resources division

Sauropod Dinosaur - geologic resources division

"Apatosaurus louisae" is large plant eating sauropod dinosaur that lived during the Jurassic Fossils of "Apatosaurus" have been discovered at Dinosaur National Monument, Colorado and Utah.

National parks: Fabaceae - public domain image
Grand Canyon National Park - Fern-like Plant

Grand Canyon National Park - Fern-like Plant

"Supaia merriami" is a fern-like plant that lived during the Permian. Fossils of Supaia have been found at Grand Canyon National Park, Arizona.

John Day Fossil Beds National Monument - Pliohippus sp.

John Day Fossil Beds National Monument - Pliohippus sp.

Teeth from Pliohippus sp., a fast running, one toed horse

National parks: Teleocerasis - public domain image
John Day Fossil Beds National Monument - Dawn redwood
John Day Fossil Beds National Monument - Mud minnow
John Day Fossil Beds National Monument - Ancient Deer

John Day Fossil Beds National Monument - Ancient Deer

"Hypertragulus hesperius" is a small deer like, plant eating mammal. This animal lived during the Oligocene Fossils of "Hypertragulus" have been found at Badlands National Park, South Dakota, and John Day Fossi... More

John Day Fossil Beds National Monument - Alder leaf
National parks: Leptocyon - public domain image
National parks: Dyticonastis - public domain image
National parks: Gastrapods - public domain image
National parks: Entelodont - public domain image

National parks: Entelodont - public domain image

"Daeodon hollandi" is a large pig like mammal known as an entelodont. This animal lived during the Miocene. Fossils of "Daeodon" have been found d at Agate Fossil Beds National Monument, Nebraska.

John Day Fossil Beds National Monument - Hemiauchenia sp.

John Day Fossil Beds National Monument - Hemiauchenia sp.

Hemiauchenia sp. "half-necked camel" teeth

John Day Fossil Beds National Monument - Amphicyon sp.
National parks: Taxodium - public domain image
John Day Fossil Beds National Monument - catfish skeleton

John Day Fossil Beds National Monument - catfish skeleton

Hypsidoris, a preserved skeleton in lakebed mudstones Hypsidoris

Cormocyon with kill
Fossilized whale vertebrae. PORE 8105

Fossilized whale vertebrae. PORE 8105

Fossilized whale vertebrae with fragment of disc fused between them. (Catalog number PORE 8105)

Petrified Forest national park - Giant Amphibian

Petrified Forest national park - Giant Amphibian

"Anaschisma browni" is a large amphibian that lived during the Triassic Fossils of "Anaschisma" have been found at Petrified Forest National Park, Arizona.

John Day Fossil Beds National Monument - Beaver skulls

John Day Fossil Beds National Monument - Beaver skulls

unidentified beaver and capacikala gradatus skulls

National parks: Dipoides - public domain image
Early salamander, Paleotaricha sp.

Early salamander, Paleotaricha sp.

The early salamander species, Paleotaricha sp., was found in the Bridgecreek strata from about 33 million years ago.

John Day Fossil Beds National Monument - Eubrontops clarnoensis

John Day Fossil Beds National Monument - Eubrontops clarnoensis

A new species of brontothere, initially described in 2005.

John Day Fossil Beds National Monument - Alder leaf
John Day Fossil Beds National Monument - Zaisanamynodon protheroi
National parks: Parahippus - public domain image
John Day Fossil Beds National Monument - Magnolia leaf

John Day Fossil Beds National Monument - Magnolia leaf

Magnolia sp., one of the many fossil leaf impressions from the Clarno Assemblage

John Day Fossil Beds National Monument - Dawn redwood
National parks: Canidae - public domain image
John Day Fossil Beds National Monument - Ambelodon sp.

John Day Fossil Beds National Monument - Ambelodon sp.

Ambelodon "shovel-tusker" elephant teeth

John Day Fossil Beds National Monument - Dromomerxy herd
National parks: Aphelops - public domain image
National parks: Brontothere - public domain image

National parks: Brontothere - public domain image

"Megacerops coloradensis" is a large rhino like mammal known as a brontothere. This animal lived during the Eocene. Fossils of "Megacerops" have been found at Badlands National Park, South Dakota, and Florissan... More

John Day Fossil Beds National Monument - Pinus sp.
National parks: Condor - public domain image

National parks: Condor - public domain image

"Gymnogyps californianus" is a large bird known as a condor. This animal lived during the Pleistocene. Fossils of "Gymnogyps" have been found in caves at Grand Canyon National Park, Arizona.

Delaware water gap - Aquatic Arthropod

Delaware water gap - Aquatic Arthropod

"Hughmilleria shawangunk" is an extinct arthropod called an eurypterid from the Silurian. Fossils of Hughmilleria have been found at Delaware Water Gap National Recreation Area, New Jersey and Pennsylvania.

John Day Fossil Beds National Monument - Tephryocyon rurestris
National parks: Salicaceae - public domain image
Nuts, fruits, seeds, and wood

Nuts, fruits, seeds, and wood

One of the many composites of plant material to come from the Clarno Nut Beds Assemblage nuts, fruits, seeds, and wood

John Day Fossil Beds National Monument - Merychippus sp.
National parks: Alder - public domain image
National parks: Diplobunops - public domain image
National parks: Nautiloid - public domain image

National parks: Nautiloid - public domain image

Cooperoceras texanum is an ocean animal known as a nautiloid. It lived during the Permian. Fossils of Cooperoceras have been found at Guadalupe Mountains National Park, Texas.

John Day Fossil Beds National Monument - Beaver skulls

John Day Fossil Beds National Monument - Beaver skulls

unidentified beaver and capacikala gradatus skulls

National parks: Aphelops - public domain image

National parks: Aphelops - public domain image

hippo-like rhino rolling in the mud

John Day Fossil Beds National Monument - Hemipsalodon grandis
John Day Fossil Beds National Monument - liquidambar sp.
John Day Fossil Beds National Monument - Telataceras radinskyi
Fresh-water Reptile

Fresh-water Reptile

"Champsosaurus gigas" is a crocodile like reptile that lived during the Paleocene. Fossils of "Champsosaurus" have been found at Theodore Roosevelt National Park, North Dakota.

John Day Fossil Beds National Monument - Daedon humerosum
John Day Fossil Beds National Monument - Clemmys sp.
Ancient Shark in Grand Canyon national park

Ancient Shark in Grand Canyon national park

"Amaradontus santuccii" is an early shark that lived during the Mississippian. Fossils of Amaradontus have been found at Grand Canyon National Park, Arizona.

John Day Fossil Beds National Monument - Hypertragulus sp.
National parks: Hyrachyus - public domain image
National parks: Crinoid - public domain image

National parks: Crinoid - public domain image

"Pycnocrinus multibrachiatus" is a crinoid (sea lilly) that lived during the Ordovician. Fossils of Pycnocrinus have been found at Mississippi National River and Recreation Area, Minnesota.

John Day Fossil Beds National Monument - Archaeohippus sp.
National parks: Oreodont - public domain image

National parks: Oreodont - public domain image

"Miniochoerus gracilis" is a small plant eating mammal known as an oreodont. This animal lived during the Late Eocene and Early Oligocene. Fossils of "Miniochoerus" have been found at Badlands National Park, So... More

National parks: Archaeohippus - public domain image
National parks: Gomphotherium - public domain image
Fossil Cycadeoid and Herbivorous Dinosaur

Fossil Cycadeoid and Herbivorous Dinosaur

"Cycadeoidea pulcherrima" is an example of an extinct group of seed plants known as cycadeoids. These plants lived during the Cretaceous. A small dinosaur known as "Hypsilophodon wielandi" is shown with the cyc... More

National parks: Castoridae - public domain image
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