Photo of the Day #535: Chimpanzee

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The skeleton of a chimpanzee (Pan troglodytes), photographed at the National Museum of Natural History. Notice the bone pathology around the roots of the teeth in the upper jaw.


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The skeleton of a young chimpanzee (Pan troglodytes), photographed at the American Museum of Natural History. If you look at the right first incisor carefully, you can see evidence of hypoplasia.
The skeleton of a blue whale (Balaenoptera musculus), photographed at the North Carolina Museum of Natural Sciences. (Notice the foramina, or small holes, in the upper jaw. In life these housed blood vessels that nourished the whale's baleen plates. They are also useful anatomical clues in…
The skeletons of a few apes (from the right: Pan troglodytes, Gorilla gorilla, and Homo sapiens), photographed at the National Museum of Natural History.
The skull of a brown bear (Ursus arctos), photographed at the Smithsonian's National Museum of Natural History. The next time someone watches my apartment I will have to post a warning about the skulls. A few are in plain sight, like a badger skull on the bookshelf and a comparative set of small…

I love the Hall of Osteology... and there's never anyone up there! It was closed for a year or two recently, so I'm glad to have it back.

Several of the specimen in that exhibit show pathologies; the American alligator (Alligator mississippiensis) has a fractured and healed left fibula; the large marine turtle (I can't remember the name right now) has fractured and healed right metacarpals 2, 3 and 4. I think this is definitely one of the best exhibits at the NMNH!!