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Eurypterids, also known as sea scorpions, were one of the fearsome swimming predators of the
Paleozoic seas (545-250 million years ago). This fossil was discovered by a former museum employee, James Kosinksi in 1948 along the Clarion River, Elk County, Pennsylvania. In 1983, English paleontologists
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The eurypterids, or sea scorpions, are an extinct group of chelicerate arthropods. They have an elongated, scorpion-like body that could reach enormous sizes (2.5 to 3 meters!), with a nonmineralizing exoskeleton composed of chitinous material. They are generally found in shallow to very shallow
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This eurypterid trackway is the largest known in the world. The 350 million-year-old fossil impressions record the footprints of an animal estimated to be more than seven and a half feet long. The shallow groove in the center of the trackway was caused by the animal's dragging tail, a possible
319:– You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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Palmichnium kosinskiorum Briggs & Rolfe, 1983 - sea scorpion tracks in sandstone from the
Pennsylvanian of Pennsylvania, USA. (CM 34388, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA)
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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Classification: Animalia, Arthropoda, Chelicerata, Merostomata, Xiphosura, Eurypterida, Eurypteridae
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Locality: outcrop along Spring Creek-Clarion River, Elk County, northwest-central
Pennsylvania, USA
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Derek E.G. Briggs and W.D. Ian Rolfe described and named this specimen
Palmichnium kosinskiorum.
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Seen here is the holotype of
Palmichnium kosinskiorum, the largest eurypterid trackway known.
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at the time it was transferred to
Commons. See the license information for further details.
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Palmichnium kosinskiorum CM 34388 (Holotype) Briggs & Rolfe, 1983
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indication of its amphibious movement between water and land.
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Flash fired, compulsory flash firing, red-eye reduction mode
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A Giant Sea
Scorpion Trackway from western Pennsylvania
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Add a one-line explanation of what this file represents
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https://www.flickr.com/photos/jsjgeology/45540315712/
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Commons is a freely licensed media file repository.
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147:Palmichnium kosinskiorum (eurypterid tracks).jpg
196:See info. at: en.wikipedia.org/Eurypterid and
189:Stratigraphy: Pottsville Group, Pennsylvanian
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326:https://creativecommons.org/licenses/by/2.0
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