Author Archives: Mark Wilson

About Mark Wilson

Mark Wilson is a 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.

Wooster’s Pseudofossils of the Week: Artifacts in thin-sections of Ordovician limestones from southeastern Minnesota

It is always exciting to a geologist when thin-sections of curious rocks are completed and ready for view. A thin-section is a wafer of rock (30 microns thick) glues to a glass slide and examined by transmitted light through a … Continue reading
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Wooster’s Fossil of the Week: Spiriferinid brachiopod from the Lower Carboniferous of Ohio

Sometimes I choose a Fossil of the Week from our Invertebrate Paleontology teaching collection because students have responded to it in some way. This week’s fossil brachiopod has confused my students a bit because it is an internal mold (unusual … Continue reading
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Wooster’s Fossils of the Week: Upper Ordovician strophomenid brachiopods from Iowa

Since we are covering brachiopods in my paleontology course this week, I’ve chosen a very recognizable genus from the Upper Ordovician of Iowa for our Fossil of the Week. This wrinkly strophomenid brachiopod is of the genus Leptaena Dalman, 1828. … Continue reading
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Wooster’s Pseudofossil of the Week: It’s not what it looks like

Impressive, isn’t it? You can practically smell it steaming on your screen. Hard to believe this object is Miocene in age, about 6 million years old. Here’s another similar specimen in a top view, if we can say that. And … Continue reading
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Last Day of GSA 2016: An empty room awaits

DENVER, COLORADO — The last day of the Geological Society of America meeting has finally arrived. Early this morning the above room will begin to gather a few of the remaining participants for a series of talks, including my own. … Continue reading
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Day Three of Wooster Geology at GSA 2016: Structure, lakes and John Muir

DENVER, COLORADO — Cole Jimerson started us off in the poster session today at the annual meeting of the Geological Society of America. He faced a tough grilling at the start from none other than our own Dr. Pollock. Notice … Continue reading
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Wooster Geology Alumni at GSA 2016

DENVER, COLORADO — Many of the Wooster Geology alumni at GSA, along with current students and professors Pollock and Wilson, gathered this evening for conversations. It was great fun with many stories and lots of good advice for our students. … Continue reading
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Another day of Wooster Geology at GSA 2016: Volcanoes and Fossils

DENVER, COLORADO — On this second day of the Geological Society of America meeting we had several Wooster presenters. Above Cassidy Jester (’17) describes her developing Senior Independent Study work on Jurassic “snuff-boxes“. Dr. Pollock’s students Chloe Wallace and Ben … Continue reading
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Wooster geologists begin their 2016 Geological Society of America meeting adventure

DENVER, COLORADO — Seventeen Wooster students have now arrived in Denver for the annual meeting of the Geological Society of America. Eleven of them are giving presentations of some sort. We are very proud of each. Dr. Meagen Pollock and … Continue reading
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Wooster Geology Alumnae in the Bearded Lady Project

Wooster has produced many paleontologists over the last century. I’m not sure exactly why we’ve had such an abundance of people who chose to devote their lives to the study ancient life, but I am most grateful to the tradition. … Continue reading
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