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EXTINCT ICE AGE BISON 7th or 8th LEFT RIB- BOG FOSSIL
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EXTINCT ICE AGE BISON 7th or 8th LEFT RIB- BOG FOSSIL
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Ice Age Extinct Bison Left RIB Late Pleistocene to Early Holocene Bison antiquus occidentalis This is a HUGE left rib (about the 7th or 8th) and is in absolutely EXCELLENT condition. It is quite SOLID and without a crack or chip. Ribs as perfect as this one are very rare from this site, or anyw for that matter. 24.6 inches long (straight line) . Very nice! This very LARGE and HEAVY rib would have belonged to a HUGE adult bull Bison antiquus occidentalis. ( : The RIB in the pictures is the Rib that you will get : ) Be sure to Check out my other items and add me to your favorites list . * * * These bones and teeth were unearthed by my wife and I from a peat bog in an urban development site in central Minnesota during the 80's and early 90's. We'd been searching the general area for fossil bison etc. since our first finds in 1972-73 along a small creek which flows near the site. Now the peat bog has been replaced by a series of drainage ponds serving the development. These specimens were legally obtained from private land. Along with the Bison antiquus occidentalis remains from the Anoka sand plain site #1, we recovered a few scattered remains of quite a number of other types of animals, including; giant beaver ( Castoroides Ohioensis ), wolf ( Canis lupus ?subspecies ), eastern elk ( Cervus elaphus canadensis ), and others. Fish, mammals, reptiles, birds. Insects, mollusks, and of course, a lot of plant material. We also found man made artifacts and other evidence of human interaction with some of these bison. * * * < Check out my other items for a copy of: "Notes on Bison Remains from the Anoka Sand Plain Site #1" by Patrick Cherney - 57 pages of information, theories, anecdotes, maps, artifact and faunal lists, charts and pictures, with an excellent reading list for those interested in further study. This self-published paper is about the actual dig site w we found the specimens which we sell on e-Bay. Written in 1991, assembled and published in 2006 with additional pictures ( co lo r) that I've taken recently of some of the items that we unearthed from the bog on the Anoka sand plain. < You can Google Earth the dig site at; 45*11'32.43"N 93*18'53.10"W if you want to get a sense of w on the Earth these creatures roamed, and what changes have been wrought to the land by both nature and man from then until now. Be sure to Check out my other items ! Q- How do you know that these specimens are Bison antiquus occidentalis ? A- Good question. You can't tell to what Bison sub-species any particular tooth or bone belongs by just looking at it's features. As a matter of fact, except for the patina of age, bison teeth (and many of the bones) look quite similar to the those of cattle ( Bos ). The answer is that these specimens have a certain provenance. All of these specimens came from a single discreet site. I have detailed bio-metric data (measurements) on a number of skulls from the same site. The indications are that most (if not all) of the animals unearthed were of the sub-species occidentalis .
B. a. occidentalis has the most variable morphological characteristics of all bison species and sub-species. I have measured specimens that resemble B. bison, B. anitquus and B. priscus , and some that seem to stand on their own, LOL. I guess it depends upon weather you're a -lumper- or a -splitter-, taxonomically speaking. B.a.occidentalis is generally thought to have arisen at the end of the Pleistocene, appearing by about 15 thousand years ago as a distinct sub-species, and co-existed allopatrically (more than one species living at the same time in different, although perhaps adjacent, areas) with B.a.antiquus until about 5,000 B.P., when both species became extinct and were replaced by B.b.bison and B.b.at... 
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