Tag Archives: Ordovician

Wooster’s Fossils of the Week: A trilobite hypostome with an encrusting cyclostome bryozoan (Upper Ordovician of Kentucky)

A quick post this week. Above is a bit of a large isotelid trilobite my students and I found this past spring break on an expedition to the Upper Ordovician (Katian) of northern Kentucky. It was collected at a roadside outcrop … Continue reading

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Wooster’s Fossil of the Week: A Biserial Graptolite (Middle Ordovician of Tennessee)

This week’s fossils are graptolites (from the Greek for written rocks) I found many years ago in the Lebanon Limestone near the town of Caney Springs south of Nashville, Tennessee. They are of the genus Amplexograptus and probably belong to … Continue reading

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Wooster’s Fossils of the Week: A slab of Upper Ordovician bivalves from northern Kentucky

Earlier this month, Luke Kosowatz, Matt Shearer and I went on a field trip through the Cincinnati region collecting Upper Ordovician (Katian) bryozoans and examples of bioerosion for their Independent Study projects and other investigations. I picked up the above … Continue reading

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Wooster’s Fossils of the Week: Strophomenid brachiopods from the Upper Ordovician of southern Ohio

Usually I find fossils in the field or lab and then craft a Fossil of the Week entry around them. This time, though, I started with a paper and then searched for fossils to illustrate it. I found this recent … Continue reading

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Wooster’s Fossil of the Week: A large trepostome bryozoan on a nautiloid conch (Upper Ordovician of northern Kentucky)

This massive trepostome bryozoan, a solid lump of biogenic calcite, was collected earlier this week on the latest Team Cincinnati field expedition into the treasure-filled Upper Ordovician underlying and surrounding that city. Wooster students Matt Shearer, Luke Kosowatz and I … Continue reading

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Team Cincinnati moves into Kentucky for additional fieldwork

Maysville, Kentucky — It was another frigid morning under the clear, pitiless skies of the Cincinnati region, but Luke Kosowatz (’17) was in good spirits. He is collecting at our first stop of the day: an exposure of the Bellevue … Continue reading

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Wooster Geologists launch Team Cincinnati 2017

Harrison, Ohio — Our first fieldwork of the year started on this cold, cold March day in southeastern Indiana. (Note the white icicles on the outcrop.) Luke Kosowatz, Matt Shearer and I have begun our projects in the magnificent Cincinnatian … Continue reading

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Wooster’s Fossil of the Week: Encrusting craniid brachiopods (Upper Ordovician of southeastern Indiana)

The two irregular patches above are brachiopods known as Petrocrania scabiosa encrusting the ventral valve of yet another brachiopod (Rafinesquina). That species name “scabiosa” is evocative if not a little unpleasant — it is also the root of the English … Continue reading

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Wooster’s Fossil of the Week: A receptaculitid (Middle Ordovician of Missouri)

This week’s fossil is a long-standing paleontological mystery. Above is a receptaculitid from the Kimmswick Limestone (Middle Ordovician) near Ozora, Missouri. I think I found it on a field trip with Frank Koucky in the distant mists of my student … Continue reading

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Wooster’s Fossils of the Week: Revisiting a pair of hyoliths from the Middle Ordovician of Estonia

We met these modest internal molds of the mysterious hyoliths about five years ago. With a dramatic new development in hyolith studies, they are worth seeing again. These fossils are internal molds (the sediment that filled the shell) of of … Continue reading

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