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.

Wooster’s Fossil of the Week: A syringoporid coral (Lower Carboniferous of Arkansas)

This specimen was collected from the Boone Limestone (Lower Carboniferous) near Hiwasse, Arkansas. It is a species of Syringopora Goldfuss 1826, sometimes known as the organ-pipe coral (but not the real organ pipe coral!). Syringoporids are tabulate co… Continue reading

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Wooster’s Fossil of the Week: Marrella splendens (Burgess Shale, Middle Cambrian, British Columbia)

The first story about this iconic fossil is the trouble I went through to get the photograph above. Our specimen of Marrella splendens is preserved in the common Burgess Shale fashion as a thin dark film on a black piece … Continue reading → Continue reading

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

We haven’t had a plant fossil in this place 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) sand… Continue reading

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Wooster’s Fossil of the Week: A Tully Monster! (Late Carboniferous of Illinois)

We have several examples of one of the strangest fossils known: Tullimonstrum gregarium Richardson 1966 — otherwise affectionately known as the Tully Monster. The above specimen is from the Francis Creek Shale Member (Carbondale Formation) at Maz… Continue reading

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Wooster’s Fossil of the Week: a siliquariid gastropod (Eocene of Alabama)

It is hard to believe that this twisty tube is a snail, but it is. Tenagodus vitis (Conrad, 1835) is the scientific name for this worm-like gastropod from the Claiborne Sand (Eocene) of Alabama. It was originally named by Conrad … Continue readin… Continue reading

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Wooster’s Fossil of the Week: A cornulitid (Late Ordovician of Indiana)

This may look like just another wormtube on a shell — a recurring theme on this blog — but it is special, of course. This is the common Paleozoic genus Cornulites Schlotheim 1820, specifically Cornulites flexuosus (Hall 1847). It was &#8230… Continue reading

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Wooster’s Fossils of the Week: Eurypterids (Late Silurian of New York)

Few fossils are more dramatic than the long-extinct eurypterids. Above is one of Wooster’s best fossils: Eurypterus remipes De Kay 1825 from the Bertie Waterlime (Upper Silurian) of New York. (Thanks to Roy Plotnick for help with the identificati… Continue reading

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A Tale of Two Museums: Part 2 — The Creation Museum

This past Saturday Elizabeth Schiltz of the Philosophy Department and I took our First-Year Seminar students on a long drive to the infamous Creation Museum in Petersburg, Kentucky. It was a beautiful day and we had a good time, if … Continue rea… Continue reading

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

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… Continue reading

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“Whisky Stones” of Vermont: A Wooster Geologist Connection

The following is a guest blog post from Wooster Geology Senior Lindsey Bowman, a native of Londonderry, Vermont: A metamorphic rock composed mainly of talc, soapstone is found all over the world and has unique qualities such as high heat … Contin… Continue reading

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