Please login in order to download photos in full size
If you are not registered, please register for free: www.Free-Photos.biz/register
Please note to download premium images you also need to join as a free member..
You can also save the photos without the registration - but only in small and average sizes, and some of them will have the site's watermark. Please simply click your right mouse button and save the image.
Please login in order to like photos
If you are not registered, please register for free:
Sorry, non-members can download up to 100 full-size photos per month.
It looks like you have used up your limit.
Free members can download an unlimited number of full-size photos - including the premium free photos.
Join as a member today for FREE! - and download the images without limitations:
You can also save the images without the membership - but only in small and average sizes, and some of them may have the site's watermark. Please simply click your right mouse button and save the image.
Turtle Cove Member Mural from the Thomas Condon Paleontology Center, painted by Roger Witter. Mural depicts the landscape, environment, plants, and animals known from the mid Oligocene of Oregon, about 30 million years ago. Included are several three-toed horses (Miohippus) being pursued by canids (Mesocyon), two saber-toothed nimravids (Eusmilus in a tree and Nimravus watching the horses from the left), and a tortoise (Stylemys).
Photo credit: John Day Fossil Bed National Monument
Ten New Prehistoric Rodent Species Discovered in Oregon’s John Day Basin
Kimberly, Ore. – Paleontologists are pleased to announce the discovery of 10 new prehistoric rodent species found at the National Park Service (NPS) John Day Fossil Beds National Monument and nearby public land administered by the Bureau of Land Management (BLM).
As reported in the current issue of the Annals of Carnegie Museum, Dr. Joshua Samuels (John Day Fossil Beds National Monument) and Dr. William Korth (Carnegie Museum of Natural History, Rochester Institute of Vertebrate Paleontology) examined newly discovered and previously undocumented fossil specimens from the John Day Formation. Their study describes 21 species of rodents in all. The new species include: an early beaver, Microtheriomys brevirhinus, which may be the distant ancestor of living beavers; a dwarf tree squirrel, Miosciurus covensis, smaller than any living in North America today; a primitive pocket mouse, Bursagnathus aterosseus, a possible ancestor of these abundant desert rodents; and a birch mouse, Plesiosminthus fremdi, named for retired John Day Fossil Beds paleontologist Ted Fremd.
“This study fills some substantial gaps in our knowledge of past faunas, specifically smaller mammals. Some of the new species are really interesting in their own right, and will ultimately help improve our understanding of the evolution of beavers and pocket mice,” said Dr. Joshua Samuels. “These finds show that despite this area being studied for well over 100 years, new discoveries continue to be made. Each new discovery helps to give us a fuller picture of Oregon's past.”
This study allows better reconstruction of Oregon’s past ecosystems and improves understanding of how faunas in the region have changed through time. Some of the new rodents are closely related to species from the fossil record of Asia, and help document the dispersal of species across the Bering Land Bridge in the Oligocene. Several of the new species, like the beaver Microtheriomys and pocket mouse Bursagnathus, will help inform studies of how living rodents have evolved.
Oregon’s John Day Basin contains one of the most complete and well-known fossil records on Earth, with nearly 50 million years of time preserved. These fossil beds record the history of ancient ecosystems, changing climate, and plant and animal evolution during the ‘Age of Mammals.’ For 150 years, paleontologists have been visiting the area to collect fossils and study geology. As a result of this research, the John Day Formation boasts an incredibly diverse fauna with over 100 recognized species of mammals, including sabertoothed nimravids, early dogs, three-toed horses, and giant ‘hell pigs.’ These new rodents were collected through decades of collaborative work throughout the John Day Basin by paleontologists from John Day Fossil Beds National Monument, the BLM in Oregon, the University of California - Berkeley, and the University of Washington. While the John Day Fossil Beds National Monument includes many of the important and best studied sites, the majority of fossil localities in the region were found on BLM-managed public lands.
"The National Park Service and BLM have worked together to manage fossil resources in Oregon under an agreement for nearly 30 years," said Shelley Hall, John Day Fossil Beds National Monument Superintendent. "The collaboration between federal agencies has allowed each agency to fulfill their mission of preserving resources for future generations while facilitating important scientific research."
The new study can be found in the current issue of the Annals of Carnegie Museum: www.carnegiemnh.org/science/default.aspx?id=9998
A PDF version of the article can be downloaded from John Day Fossil Beds National Monument at: www.nps.gov/joda/learn/news
Additional information about John Day Fossil Beds National Monument is available online at: www.nps.gov/joda
Additional information about the BLM’s paleontology program is available online at www.blm.gov/or/resources/heritage
|Source||Turtle Cove mural - Roger Witter|
|Author||Bureau of Land Management Oregon and Washington|
|This file is licensed under the Creative Commons Attribution 2.0 Generic license.|
|This image was originally posted to Flickr by BLMOregon at http://flickr.com/photos/50169152@N06/17502692234. It was reviewed on by the FlickreviewR robot and was confirmed to be licensed under the terms of the cc-by-2.0.|
|This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.||
|Annotations||This image is annotated: View the annotations at Commons|
|Orientation of image||1|
|Image resolution in width direction||600|
|Image resolution in height direction||600|
|Unit of X and Y resolution||2|
|Color space information||65535|
|Exif image width||3000|
|Exif image length||1289|
|Software used||Adobe Photoshop CS3 Windows|
See some ads as well as other free photos:
While the copyright and licensing information supplied for each photo is believed to be accurate, Free-Photos.biz does not provide any warranty regarding the copyright status or correctness of licensing terms. If you decide to reuse the images from Free-Photos.biz, you should verify the copyright status of each image just as you would when obtaining images from other sources.
The use of depictions of living or deceased persons may be restricted in some jurisdictions by laws regarding personality rights. Such images are exhibited at Free-Photos.biz as works of art that serve higher artistic interests.