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You can find interesting fern fossils in St. Clair. What’s unique about them is that during fossilization, pyrite got into the mix. Through time, this pyrite was replaced by pyrophyllite, which gives the fern fossils their white color. Other Top Places To Find Pennsylvania Fossils By Region
St. Clair, Pennsylvania - Fern Fossils. All plant fossils were found in the Llewellyn Formation (300 mya, Pennsylvanian Period) and are one of the few places where one can find these very detailed white (sometimes yellow) ferns on a striking contrast of black shale.
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Fossils Alethopteris serli and Neuropteris sp., Carboniferous (Pennsylvanian), Llewellyn Formation, St. Clair, Schuylkill County, Pennsylvania, US - Houston Museum of Natural Science - DSC01757. Nearly 100 fossil species have been identified in the Llewellyn; almost all of them plants.
Mar 26, 2019 · Common Pennsylvania Fern Fossils. Huge slabs of weathered shale and slate run down the local stream nearby. Lifting pieces up can introduce you to a large number of different fern fossils. There are bits of Lepidophylloides and pieces of Lepidodendron bark. The ferns could be Neuropteris or Pecopteris, and I am leaning towards Pecopteris.
Nov 13, 2020 · Fossil Friday #31 highlights Pennsylvanian Period ferns from St. Clair, PA. Yes, that's Pennsylvanian ferns from Pennsylvania! The Llewellyn Formation, from whence these ferns come, dates to 308 to 300 million years ago. Remember, the fossils of Mazon Creek date to about 307 million years, so these plants were contemporaries.
Sep 29, 2022 · (520) 322-5773. tgms@tgms.org. Posted on September 29, 2022. World-Famous St. Clair Fern Fossils. The fern fossils from St. Clair, Pennsylvania are world famous. These plant fossils occur in black shale matrix, and have a characteristic white coating of the mineral pyrophyllite.
Sep 1, 2023 · Distinctive fossils from St. Clair, Pennsylvania are composed of pyrophyllite, kaolinite, and pyrite. • Fern fossils may be only slightly compressed and must have formed by a multi-stage process. • Pyrophyllite in the fossils indicates a low-grade metamorphic origin, consistent with the formation of anthracite coal.
