Agate Fossil Beds Stenomylines Or Ammonites?

Agate Fossil Beds Stenomylines Or Ammonites
Learn about these two types of Fossil,
Dig Up the Latest Science of Agate: K. Watmore & K. LoMedico Marriott
Agate Fossil Beds National Monument
Paleontologists Kristin I. Watmore and Kate LoMedico Marriott talk about their current research with animals found in our near Agate Fossil Beds. Ms. Watmore studies Stenomylines from Agate and Ms. LoMedico Marriott studies ammonites from the Pierre Shale (just north of Agate).
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https://www.nps.gov/media/video/view.htm?id=D3E007