PT - JOURNAL ARTICLE AU - Edgar Roscoe Cumings TI - The morphogenesis of Platystrophia; a study of the evolution of a Paleozoic brachiopod AID - 10.2475/ajs.s4-15.85.1 DP - 1903 Jan 01 TA - American Journal of Science PG - 1--48 VI - s4-15 IP - 85 4099 - http://www.ajsonline.org/content/s4-15/85/1.short 4100 - http://www.ajsonline.org/content/s4-15/85/1.full SO - Am J Sci1903 Jan 01; s4-15