• Two

    John Day Fossil Beds

    National Monument Oregon

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John Day Fossil Beds Paleontology

Image of a paleontologist in the field.
Field work is ongoing at the monument.
 

Every summer members of the park's paleontology staff visit many of the over 700 fossil localities that make up the John Day Fossil Beds.

Before any fossils are collected from the field, careful notation and location recordings are made in field notebooks.

 
Image of paleontologists doing field work.

How do paleontologists find fossils?

The simple answer is that they know where to look! Paleontologists search certain rock types where fossils would likely have been preserved. For example, water-lain strata such as ancient lake beds and river or floodplain deposits often contain fossils. Then the dirty work begins. They examine the ground in search of any bone or plant fragments. Paleontologists often prospect for new remains exposed after the beds have weathered for awhile.

 
Image of a fossil in situ.
Fossils that erode from an unknown source are termed "float." Those found still embedded in rock are termed in situ, meaning "original place."

Did You Know?

Image of an artistic rendition of a brontothere,

Brontotheres, large relatives of horses and rhinoceros, once lived on the North American continent.