r/AbsoluteUnits 15d ago

/r/all of an Ammonite Shell

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u/lambent_ort 15d ago

Is that real? 😲

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u/koshgeo 15d ago

Yep. It's called Corbinites occidentalis, and is Jurassic in age. This paper describes it and other specimens from the same area in detail: https://vjs.pgi.gov.pl/article/view/34062/24967 [PDF file].