RT Journal Article SR Electronic T1 Thomas Henry Huxley JF American Journal of Science JO Am J Sci FD American Journal of Science SP 177 OP 183 DO 10.2475/ajs.s3-50.296.177 VO s3-50 IS 296 A1 Marsh, O. C. YR 1895 UL http://www.ajsonline.org/content/s3-50/296/177.abstract AB