Click on images to enlarge, found in Benton county, Arkansas, Boone limestone formation
This branching crinoid stalk in matrix looks to be the same species as by bodacious huge stalk pictured elsewhere on this site.
This tube-shaped fossil has turned up from time to time in soft, porous limestone. I have found some twice this one's diameter. Any ideas? Update: This fossil has been identified by visitor Angela as a rugose coral. Thanks!
Another view of the same creature.
Imagine my shock at finding a dinosaur tooth in the Mississippian period! Just kidding. Some sort of conical, flat mollusk. Anyone know what it is?
This appears to be a cast of the same conical creature, this one in the blastoid-laden lightweight chert you can find in a certain Benton county creekbed.
Closeup of the fine detail preserved in the soft red limestone that can be found in Benton county. Each of those little appendages is about 1/5mm wide.
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