This page is the Sources Document for Video #4 in the Paleontology Across the U.S series.
Sources:
https://m.youtube.com/watch?v=VB_GWz25B3Q
Geology and fossils in Helena:
How to pronounce Mucrospirifer Mucronatus:
https://www.howtopronounce.com/mucrospirifer-mucronatus
Information on Mucrospirifer Mucronatus:
https://en.wikipedia.org/wiki/Mucrospirifer
More information on Mucrospirifer Mucronatus: https://www.fossils-facts-and-finds.com/mucrospirifer.html
Information on brachiopods:
https://ocean.si.edu/ocean-life/invertebrates/modern-day-brachiopod
More information on brachiopod:
http://echinoblog.blogspot.com/2013/11/basic-brachiopoda-5-things-to-know.html
More More information on Brachiopods: https://en.wikipedia.org/wiki/Brachiopod#:~:text=Brachiopods%20(%2F%CB%88br%C3%A6,right%20arrangement%20in%20bivalve%20molluscs.
More More More, information on Brachiopods:
Geological time scales:
https://en.wikipedia.org/wiki/Geologic_time_scale
-end of sources document.


