The ESCONI May 2026 Paleontology Study Group Meeting will be held on Saturday, May 16th, 2026 at 7:30 PM via Zoom. John Catalani will present “An Ordovician Konzentrat Lagerstätte: The Dixon Mifflin Residuum Fauna”.
John will begin the program by introducing what a Konzentrat-Lagerstätten consists of and a brief introduction of the Platteville Formation. The depositional environment of the Mohawkian Sea, home of the Platteville fauna sets the stage for the faunal comparison.
The program then concentrates on the Mifflin Member of the Platteville Formation and the exceptional preservation of the Dixon Lagerstätte. To appreciate the remarkable preservation of the Dixon material a standard fauna is needed for comparison. Fortunately, a Mifflin dolostone super-site is (was) located only 10 miles southeast of Dixon: the Lee Center Quarry. The two sites are examined in detail as to location, lithology, and faunal lists.
An assessment of the faunas follows leading into a photographic comparison of specimens to show the unique preservation of the residuum fauna.
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Topic: ESCONI Paleontology Study Group May 16, 7:30PM
Time: May 16, 2026 07:30 PM Central Time (US and Canada)
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