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.

The Geoheritage of the Sõrve Peninsula, Saaremaa Island, Estonia: A Silurian Marine Paradise

A geoheritage site is a location where the geological features are worth preserving for scientific and cultural reasons. It is a relatively new term dating back to the 1990s. The purpose of designating a geoheritage site is to mark it … Continue … Continue reading

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My last class at Wooster: Sedimentology & Stratigraphy in the Spring Semester of 2024

The delightful students above are shown on the last day of the Spring 2024 semester edition of the Sedimentology & Stratigraphy course. I’m retiring from the College of Wooster in August of 2024, so they are my final students. Thank … C… Continue reading

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The encrusters who went missing: A new paper on the taphonomy of bryozoans that encrusted brachiopods in the Late Ordovician of the Cincinnati region, USA

I’ve spent much of my career investigating marine sclerobionts through time. A sclerobiont is an organism that lives on or within a hard substrate. Among marine sclerobionts are oysters that encrust cephalopod shells, barnacles attached to boat h… Continue reading

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An ancient name remembered

In the summer of 2018 I traveled to Wales for a conference in Cardiff. Immediately afterwards I visited my dear fiends Caroline and Tim Palmer in Aberystwyth, and they gave me a tour of Welsh sites they found particularly interesting. … Continue … Continue reading

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Meet two new Ordovician fossil species from Estonia — a cover story

The conical fossil above on the cover of the latest issue of Palaeoworld is the paratype of Conchicolites parcecostatis, a new Ordovician (Katian) cornulitid species from the Korgesaare Formation, Sutlema quarry, Estonia. It is tiny, only about two mil… Continue reading

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Two new Upper Ordovician bryozoan papers appeared this week

Readers of this blog will remember Kate Runciman, a 2022 graduate of The College of Wooster and now a graduate student at the University of Cambridge. Her Independent Study thesis (after peer review and revisions) has now been published in … Cont… Continue reading

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Paleoecology class at Wooster finishes the semester in great style

I was very fortunate this semester to have such a fine class of paleoecologists. This course broadly covers the Earth’s ecological history, so it consists of principles, theories and processes illuminated with case studies, all strung along the t… Continue reading

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A delightful little field trip in Ohio with a Polish-American team

Today was astonishingly beautiful in Ohio: bright blue skies and the peak of fall leaf colors. By happy circumstance, I had three Polish paleontologist friends visiting Wooster after the Geological Society of America Annual Meeting in Pittsburgh last w… Continue reading

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Freshwater sponge and diatom team presents at the annual Geological Society of America meeting in Pittsburgh

This summer Garrett Robertson and Minnie Pozefsky performed superb research on the sponges and diatoms in a core from Brown’s Lake near Shreve, Ohio. Their project is summarized here. Today Garrett presented their work, along with others on the N… Continue reading

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The distinguished paleontologist Dr. Julia Clarke visits Wooster’s Earth Sciences department.

The distinguished paleontologist Dr. Julia Clarke visited our Paleoecology lab in Wooster yesterday. She was there as a Phi Beta Kappa Visiting Scholar. She was wonderful with her several fascinating talks and many interactions with our students. Every… Continue reading

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