@misc{indiciae4a40e7336395, title = {Syringoporoid corals; guides to the stratigraphy of upper Paleozoic rocks in the Western Interior region}, author = {W.J. Sando}, year = {1984}, doi = {10.3133/ofr8480}, url = {https://pubs.usgs.gov/publication/ofr8480}, note = {Source identifier: ofr8480} }