This ammonite fossil was seen at the New Harmony Indiana USA Working Men's Institute Museum & Library in June 2020. It was identified as a Ceratites nodosus (Bruguière. 1789). The fossil dates to Cretaceous Period. Specimen accession number WMI 309.7. No locality for this fossil was listed.
The Working Men's Institute (WMI) was created by geologist William Maclure in 1838. Its goal is to provide useful knowledge to those who work with their hands. At one time there were 160 institutes in Indiana and Illinois, only the New Harmony branch remains. The library is longest continuous operating one in the state of Indiana.