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I’m pretty new to fossils—I have found a few strays before. But the other day, I found what appears to be an entire fossil bed. It’s about a 150 square foot area, full of fossils, on a hillside ridge near the Whetstone Mountains, outside of Tucson, AZ. I don’t know if this sort of find is very common. But there is a layer with what I think are marine fossils—hundreds and hundreds of seashells. And then about 50 feet in elevation above that layer are what appears to be long bone fossils. Dozens and dozens of them. Most are about as thick as my fingers and the longest are about 18 inches. The reason I think they are bones is because of Photos #9-12, which show what seems to be a bone which was snapped in half before fossilization. Please correct me if I’m wrong—I am no expert here. I believe there are still some seashell fossils mixed in with the bones. But there are no bones in the lower seashell layer that I could tell. The Carmex container is 35mm in diameter. Most of the well-preserved seashells are 1cm long or less. The shells that appear to be sitting on top of the bedrock are actually firmly attached. There are also loose bone fossils that have washed out of the rock—see photo 19. I’m sorry my photography is not very good. I do have several more photos if anyone wants to see them. Some of the photos rotated when uploaded--I'm not sure why. I am very curious to know if anyone can tell me what kind of bones these might be. (If they are bones.) And how old they might be. I’m also curious to know if anyone can age and identify the kinds of sea life in the lower fossils. Photo #5 has a bigger spiral that looks like a fossil. Also can anyone tell me what kind of stone is the gray rock which the fossils are trapped in? It’s very gritty and there’s absolutely tons of it. Is the gray rock what you would call bedrock? Also, what kind of stone are the fossils themselves in this case? Really I would be grateful to know anything you all could tell me about these fossils. I’m absolutely fascinated by it all. Thanks in advance.