Tag Archives: Permian

Wooster’s Fossil of the Week: Reptile tracks from the Lower Permian of southern Nevada

Always lead with your most interesting image. The fossil here is the thin orange slab of siltstone underneath my magnificent Komodo Dragon model. Here is the slab itself. On the far right and the far left you can see two … Continue reading

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Wooster’s Fossils of the Week: Silicified productid brachiopods from the Permian of West Texas

The three beauties above are productid brachiopods from the Road Canyon Formation (Middle Permian, Roadian, approximately 270 million years old) in the Glass Mountains of southwestern Texas. They are part of a series we’ve done on the silicified fauna of … Continue reading

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Wooster’s Fossils of the Week: Silicified chonetid brachiopods from the Permian of West Texas

Above are four valves of the chonetid brachiopod Dyoros planiextensus Cooper and Grant, 1975. They are preserved by silicification and were recovered from a block of the Road Canyon Formation (Roadian Stage of the Guadalupian Series of the Permian System) … Continue reading

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Wooster’s Fossil of the Week: A silicified rhynchonellid brachiopod from the Permian of West Texas

Sometimes fossils can be more useful when broken than whole. Above is a much-abused rhynchonellid brachiopod from the Road Canyon Formation (Middle Permian, Roadian, about 270 million years old) found in the Glass Mountains of southwestern Texas. It is part … Continue reading

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A surprising bit of Permian in central Sicily

MARSALA, SICILY, ITALY–This morning the pre-conference field trip of the International Bryozoology Association headed into the mountains of central Sicily. The roads were steep and windy, as one would imagine, and the views of mountainsides, villages and fields spectacular. We … Continue reading

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Wooster’s Fossil of the Week: An amphibian from the Permian of Germany

The above skeleton is of the salamander-like Apateon pedestris von Meyer 1840 from the Lower Permian of Odernhelm, Germany. There are just enough of these tiny little bones to show the ghostly outline of this freshwater amphibian. It is our … Continue reading

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Wooster’s Fossils of the Week: Silicified sclerobionts (Middle Permian of southwestern Texas)

During my work at the National Museum of Natural History last week, I had my research desk amongst the many cabinets housing the famous Permian brachiopod collection made by the eminent paleontologist Richard E. Grant (1927–1995). Most of these specimens … Continue reading

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Wooster’s Fossil of the Week: A new microconchid genus and species (Permian of Texas)

Two years ago I was invited to Texas by Tom Yancey (Texas A&M) to look at some curious wiggly tubular fossils in the Lower Permian (about 280 million years old). They form small reefs a meter or so across and … Continue reading

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Wooster’s Fossil of the Week: an aberrant brachiopod (Permian of Texas)

Funny word to apply to a fossil: aberrant, meaning “deviating from the normal”. It’s an old-fashioned word rarely used these days, primarily because we have a hard time defining “normal”. It was the word used when I was introduced to … Continue reading

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Wooster’s Fossil of the Week: Reef-forming brachiopods (Middle Permian of southwestern Texas)

In my early days of teaching paleontology I had an enthusiastic trading program with colleagues around the country. I would supply fine fossils from the Upper Ordovician of southern Ohio for what I considered exotic specimens from elsewhere. In one … Continue reading

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