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Showing results for tags 'plattin'.
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Just wanted to show the tiny segment I found tonight. Plattin formation. Almost as small as my tiniest segment different species though.
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We've been finding these oddball puffy stars in the Late Ordovician (Sandbian) of eastern Missouri (Illinois Basin), in the uppermost part of the Plattin Group (a Platteville equivalent) or possibly the lowermost part of the Decorah Group (Katian). We've been finding a lot of weird fossils in that zone, including articulated cyclocystoids, but these I'm at a loss on. They seem to be calcite and preserve in the same texture and color as other echinoderm material in the same rock. They vary in convexity and in the presence of a central hump or divot, but there never seems to be a lumen that goes all the way through as far as I can tell. Some possibilities: stelleroid crinoid (but where anatomically? cystoid (but where anatomically? Up for other ideas or insights. Seen anything like this before?
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A friend uncovered this oddball today in the Late Ordovician (Sandbian) of eastern Missouri, in the uppermost part of the Plattin Group (a Platteville equivalent) or possibly the lowermost part of the Decorah Group. He's been finding a lot of weird fossils in that zone, including articulated cyclocystoids, but this one I'm at a loss on. Too wobbly for an orthoconic cephalopod, too much space between calcite elements for a crinoid column. Given the size, is machaeridian a possibility? What other ideas should we be considering?
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- annelida
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Eastern Missouri / Southwestern Illinois Fossil Localities
Osteodontokeratic posted a topic in Member Introductions
Hello Fellow Fossil Officienados, I just recently retired and was wondering if anyone in the Greater St. Louis area would be interested in going on some fossil collecting expeditions? Been collecting in the area for 4 years and know there are a lot more places to go to find some quality &/or unique specimens than where I have been. On occasion, to the safer road cuts, I started taking my oldest grand child, age 8. He is getting the bug! So in addition to any more remote locales that I am willing to go to, would also like to know if anyone knows of a place that is relatively safe for an 8 year old. Have taken him so far to a Decorah site on Highway M & a Fern Glen site off I-55, in Jefferson Co., Missouri. BTW, I am a member of EMSP, ESCONI, and formerly of SIESC. Am also interested in going further afield. Recently visited the I-64 road cut near Sulphur, IN. Take care, ODK- 11 replies
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