Confused "University" claims Ammonites aren't real????? GEOLOGIST RESPONDS!

Mudfossil University's Roger Spurr made a video claiming that ammonites aren't real??? So I HAD to respond! Support the channel:   / geoduck_science   Roger's Video:    • Ammonites and Stone Balls found Worldwide ...   GeoGirl's Video on biostratigraphy:    • Geologic Time & Dating Rocks Without Isoto...   He et al. (2016) [ammonite shell mineralogy source]: http://dx.doi.org/10.1139/cjes-2015-0184 Cherns et al. (2021) [ammonite soft tissue paper]: https://nhm.openrepository.com/bitstr... Tellado et al. (2015) [source of the "tendon balls" diagram]: https://www.sciencedirect.com/science... Ideo et al. (2020) [paper on scx+ and sox9+ cells]: https://journals.plos.org/plosone/art... Tulane University page on clay minerals: https://www2.tulane.edu/~sanelson/een... Peppe & Deino (2013) [info on radiometric dating techniques]: https://www.nature.com/scitable/knowl... Nikki's videos about Mudfossil University:    • Mudfossil University Almost Had a Point Ab...      • A Very Confused Man Fails To Understand Si...