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Showing results for tags 'kaibab'.
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This was found among one of the large chert layers in the permian Kaibab Limestone. The sponge, Actinocoelia, is very common in this layer but this seems different or is at least a different presentation or segment of it. It's nearly perfectly round. It's diameter is 3 1/2 cm.
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- kaibab
- nautiloids
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Hey all! 13 years after I made an account, I am finally ready to participate. I live on Kaibab limestone among sponges and shark teeth and have been hunting the Kaibab limestone for a couple decades. I think I have a pretty good representation of most of the faunal found in the rock. I love that the Kaibab has so many different layers of different kinds of rocks and animal communities. It's the nautiloids and trilobites that get me most excited, but I still look at every sponge and brachiopod fossil that I see. Heads and tails!
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A common silicified sponge from Permian Kaibab Limestone. Index sponge for Kungarian/Leonardian Age rocks from the western US. Reference: http://geology.byu.edu/home/sites/default/files/actinocoelia-maeandrina-finks-from-the-kaibab-limestone-of-northern-arizona-leland-r.-griffin.pdf
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- actinocoelia maeandrina
- arizona
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