RT Journal Article SR Electronic T1 Fossils in the "Archean" rocks of central Piedmont Virginia JF American Journal of Science JO Am J Sci FD American Journal of Science SP 50 OP 52 DO 10.2475/ajs.s3-44.259.50 VO s3-44 IS 259 A1 Nelson Horatio Darton YR 1892 UL http://www.ajsonline.org/content/s3-44/259/50.abstract AB