Author Archives: Mark Wilson

About Mark Wilson

Mark Wilson is an emeritus Professor of Geology at The College of Wooster. He specializes in invertebrate paleontology, carbonate sedimentology, and stratigraphy. He also is an expert on pseudoscience, especially creationism.

A geological and archaeological hike in northeastern Ohio on the last day of winter

It was a beautiful latest-winter day in Wooster. Nick Wiesenberg had the great idea of taking an afternoon to hike through Pee Wee Hollow, a wooded area of ravines, streams and rocky exposures a few miles northwest of Wooster near … Continue reading
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A warm February afternoon in Spangler Park

Wooster, Ohio — The weather today was extraordinary. It reached at least 70°F in our little Ohio town, which must be near a record. Greg Wiles, Nick Wiesenberg and I took advantage of the warmth and sunlight to hike through … Continue reading
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Wooster’s Fossil of the Week: Echinoid bite marks from the Upper Cretaceous of southwestern France

Above is another beautiful image from Paul Taylor’s paleontological lab at the Natural History Museum, London. It is one of our fossil oysters (Pycnodonte vesicularis) from the French Type Campanian collected in the town of Archiac in southwestern France on … Continue reading
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Wooster’s Fossils of the Week: Barnacle borings from the Cretaceous of southwestern Francs

Small comma-shaped trace fossils this week in a Cretaceous (Upper Campanian) oyster (Pycnodonte vesicularis) from the Aubeterre Formation of southwestern France. (Locality C/W-747, Plage des Nonnes, to be exact.) These are borings produced by barnacles, which are sedentary crustaceans more … Continue reading
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Wooster’s Fossils of the Week: The tiniest of brachiopods (Middle Jurassic of Utah)

While preparing for this summer’s expedition to the Middle Jurassic of southwestern Utah, I found this specimen in our collection from the 1990s. You may be able to just make out the wedge-shaped outline of a mytilid-like bivalve with several … Continue reading
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Wooster’s Fossils of the Week: Bryozoan encrusting a bryozoan (Campanian of southwestern France)

Today’s post is in honor of Macy Conrad’s (Wooster ’18) poster at the annual meeting of the Geological Society of America, which was held earlier this week. It is also to recognize again the Scanning Electron Microscopy (SEM) genius of … Continue reading
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Wooster’s Fossils of the Week: Foraminifera clustered around a sponge boring (Campanian of southwestern France)

If all goes to plan, today I leave for the Annual Meeting of the Geological Society of America, held this year in Seattle, Washington. To mark the occasion, this week’s fossil is from a poster Macy Conrad (’18), Paul Taylor … Continue reading
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Wooster’s Fossils of the Week: “Ghosts” in the Upper Ordovician of Kentucky

This year Caroline Buttler (Department of Natural Sciences, Amgueddfa Cymru – National Museum Wales) and I had a great project describing a cave-dwelling fauna in the Upper Ordovician of northern Kentucky. We hope that work will appear soon in the … Continue reading
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Wooster’s Fossil of the Week: A terebratulid brachiopod from the Upper Cretaceous of southwestern France

Yes, we’ve had a run of French Cretaceous fossils here. This is because we’re in the midst of a major project stemming from summer fieldwork in the Type Campanian of southwestern France. The fossils are delicious, and they are before … Continue reading
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Wooster’s Fossils of the Week: An oyster reef from the Middle Jurassic of southwestern Utah

It was a pleasure to pull this massive specimen out of the cabinets, where it had been sitting for more than 20 years. It is a small reef of the oyster Liostrea strigilecula (White, 1877) from the Carmel Formation (Middle Jurassic) … Continue reading
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