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Posted in response to Oklahoma Fossils from Russell on September 15, 2008 at 08:22:17:
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Russell, Oklahoma has many sites for fossils. The ones you describe from the mid-section of Oklahoma are probably marine, and of Pennsylvanian age. There are places where you can find terrestrial plant fossils related to Equisetum (but bigger than modern-day equisetum), but you will not find terrestrial and marine fossils at the same site from the same formation. The commonest corals in OK are the various "horn" corals. The various shells you mention may be brachiopods instead of clams. You'll have to examine the most complete ones to tell the difference. Segments of crinoid stems may look somewhat like modern-day equisetum (size & shape), but are actually marine fossils in the echinoid group of animals(sea lilies). The local club in Ponca City is known as the "Rough and Tumbled Rock & Gem Club, Inc." with a contact listed for President Daya Martin 620-442-2923. Any member of this club should be able to help you with identification of your fossils. William G. Lyon
From William G. Lyon - September 25, 2008 at 08:22:03
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