Tag Archives: Ohio

Sand and Gravel in the Holmesville Moraine

gwiles April 13, 2012 10:39 pm

The College of Wooster Geomorphology class set out to explore the Holmesville Moraine, a 20 minute drive south of Wooster straight down the Killbuck River Valley. It was a beautiful day, except for the rain. The first stop was Holmesville … Continue reading →

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Wooster’s Fossil of the Week: A spiriferinid brachiopod (Logan Formation, Lower Carboniferous, Ohio)

Mark Wilson April 1, 2012 1:59 am

This brachiopod is one of the most common in the Logan Formation of Wooster, Ohio, so our students know it well from outcrops in Spangler Park and the occasional excavations in town. Four specimens of Syringothyris Winchell 1863 are visible … Continue reading →

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Wooster’s Fossil of the Week: An asteroid trace fossil from the Devonian of northeastern Ohio

Mark Wilson February 12, 2012 1:31 am

It is pretty obvious what made this excellent trace fossil: an asteroid echinoderm. (The term “asteroid” sounds odd here, but it is the technical term for a typical sea star.) The above is Asteriacites stelliformis Osgood, 1970, from the Chagrin … Continue reading →

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Wooster’s Fossil of the Week: A mysterious sponge (Late Ordovician of Ohio)

Mark Wilson February 5, 2012 1:48 am

I’ve been collecting and studying fossils from the Upper Ordovician of the Cincinnati region for three decades now, but I’ve never seen another specimen like the one pictured above. An amateur collector, Howard Freeland, generously donated this rock to Wooster … Continue reading →

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Wooster’s Fossil of the Week: A scale tree (Late Carboniferous of Ohio)

Mark Wilson January 8, 2012 1:14 am

We haven’t had a plant fossil in this blog for awhile. Lepidodendron Sternberg 1820, pictured above, is one of the most common fossils brought to me in Wooster by amateur collectors. It is abundant in the Upper Carboniferous (Pennsylvanian) sandstones, … Continue reading →

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A Tale of Two Museums: Part 1 — The Cleveland Museum of Natural History

Mark Wilson December 6, 2011 3:33 pm

Last week I had the marvelous opportunity to visit two very different museums with Wooster Geologists. This is the first of two posts with short vignettes of the memorable sights and sounds. The first museum was the Cleveland Museum of … Continue reading →

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Exploring the Silica Formation (Middle Devonian) in Northwestern Ohio

Mark Wilson October 22, 2011 7:25 pm

PAULDING, OHIO–There’s nothing like the stirring rings of 50 geologic hammers in the morning. Today I was a guest of the North Coast Fossil Club and my friend Brian Bade in a quarry exposing the Middle Devonian limestones and shales. … Continue reading →

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Fossils in the Wild: Invertebrate Paleontology Field Trip

Mark Wilson September 11, 2011 11:06 pm

CAESAR CREEK LAKE, OHIO–The 2011 Invertebrate Paleontology class had a productive field trip on a beautiful Ohio day. Thunderstorms roamed the state, but we saw them only when we were comfortably on the bus. We worked in the emergency spillway … Continue reading →

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Wooster’s Fossil of the Week: A trilobite hypostome (Upper Ordovician of southern Ohio)

Mark Wilson August 21, 2011 1:44 am

We had a familiar trilobite last week, so this week we’ll look at a poorly-known part of a trilobite: the hypostome. Above is an incomplete forked, conterminant hypostome of the large trilobite Isotelus. (Isotelus, by the way, is the state … Continue reading →

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Wooster’s Fossil of the Week: A chain coral (Silurian of Ohio)

Mark Wilson June 19, 2011 1:58 am

For some reason the Fossil of the Week I’ve had the most comments about is the Ordovician honeycomb coral from Indiana. It has an unexpected polygonal symmetry reflected in many other geological materials like desiccation cracks and columnar basalt. So … Continue reading →

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