Steve & I spent 5 days at Badlands National Park in South Dakota last week. One of the highlights of our adventure was finding what I think is a fossilized bone. This post is my way of reporting that find to a Physical Science Technician in Paleontology at the park. I don’t have a GPS device to help him locate the find, so I’m walking him (and any other readers) to it through this blog post. If you happen to visit the park and find this bone (or any others), please leave it undisturbed. It is essential to have it in its original place in the sedimentary layers of rock in order to determine vital information.
I initially spotted and photographed the bone on September 22 and filled out the reporting form at the Visitor’s Center. The next day, I returned to take additional photos to help lead the paleontology team to its location. I just got home last night, and can now download my photos to this blog and share them.
The crosswalk over Hwy 240 at the Visitors Center leads to a creek wash that starts at a lone cottonwood tree and goes west toward the rocky ridge. There is a separate rocky hill to the right of that wash. Follow the wash beyond that hill as it curves to the left. The peak with the squared-off top is a primary landmark. The fossil I saw is in the face of a hill to the left of that peak. Click on the first photo of this gallery to see the series in a slideshow.
I was absolutely thrilled and humbled to discover this little white tubular thing. I hope it’s a genuine fossil. Even if it’s not anything significant to science, the invitation to observe and participate in sharing this observation is significant to me.
I am a huge fan of the National Parks and happy to purchase an Annual Pass in support of America’s Best Idea. I hope that future generations continue to value, respect, and protect these places that show the unique and autonomous nature of the Earth.
*** Update 10/4/2018***
From a letter from the Paleontologist at the Park:
“That is a humerus or upper arm bone (the bone that articulates with the scapula in the shoulder). It looks to be in relatively complete condition, albeit weathered and fractured. It also looks like there may be additional fragments of bone eroding on that slope. Unfortunately, I can’t see enough of them to make any interpretations on what they might be.
Based on the size of the humerus and it’s general shape, however, I would make an educated guess that it probably came from an oreodont (of the family Merycoidodontidae). As you may be aware from your visit, oreodonts are the most common, abundant, and widespread mammal found in the fossil record here at Badlands. From 36 to 27 million years ago (during the Eocene and Oligocene Epochs), they were an exceptionally prosperous group of herbivores that dotted the landscape, probably living together in large herds. They would have been a key prey item for many carnivores, such as dogs and the ancestral cat-like lineage called nimravids (family Nimravidae). As a group within the animal kingdom, the last known oreodonts finally disappeared from the planet during the Pliocene Epoch some 4 to 5 million years ago.”
So very cool! *smiles*