Temporal range: Pennsylvanian
|Photograph and drawing of holotype.
Click on image for details.
Kluessendorf & Doyle, 2000
Pohlsepia mazonensis is the earliest described octopod, dated at approximately 296[verification needed] million years old. The species is known from a single exceptionally preserved fossil discovered in the Pennsylvanian Francis Creek Shale of the Carbondale Formation, north-east Illinois, United States.
Pohlsepia mazonensis is named after its discoverer, James Pohl, and the type locality, Mazon Creek. Its habitat was the shallows seawards of a major river delta in what at that time was an inland ocean between the Midwest and the Appalachians.
- Kluessendorf, Joanne; Doyle, Peter. "Pohlsepia mazonensis, An Early 'Octopus' From The Carboniferous Of Illinois, USA". Palaeontology. 43 (5): 919–926. doi:10.1111/1475-4983.00155.
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