Red Verona marble
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It includes internal skeletons of ammonites and belemnoidea rostra in a fecal pellets matrix. It has been quarried from Red Ammonitic facies of Verona or the sedimentary Scaglia Rossa, both in the Lessinia geographical area of the northern Veneto Prealps.
- Korus, Jesse T., ed. (Sep 2014). Geologic Field Trips Along the Boundary Between the Central Lowlands and Great Plains: 2014 Meeting of the Gsa North-Central Section (Field Guide). Geological Society of America. p. 47. ISBN 978-0813700366. Retrieved 26 April 2015.