Crinoids / Arthroacantha punctobranchiata - page 1
I visited this locality three times between 1983 - 1984. I collected to the left-center of the exposure, but never inside the quarry itself. What I did was examine the layers and determined which contained specimens, then worked, usually several hours, at removing the overburden. Most of what was found was some rather spectacular Arthroacanth puntobranchiata crinoids, and with some brachiopods.
4 - 9f / front
4 - 9f / back
From "Fossil Collecting in the Mid Atlantic States" by Jasper Burns
Maps
East of the quarry, along rte 56, is the town of Big Spring.
This is the locality as seen on the 1968 Maryland Geologic Map of Washington County.
Links
https://commons.wikimedia.org/wiki/File:Arthroacantha_punctobranchiata.jpg
http://www.thefossilforum.com/index.php?/topic/33709-western-maryland-crinoids/
viewsofthemahantango.blogspot.com/2012/08/marcellus-shale-crinoids.html
www.jstor.org/stable/1303668
pubs.geoscienceworld.org/jpaleontol/article-abstract/50/4/759/81073