Two new tarantulas of the genus Eurypelma from the San Carlos Mountains Ralph Vary Chamberlin , 1937 In The Geology and Biology of the San Carlos Mountains, Tamaulipas, Mexico. Univ. Michigan Press, Ann Arbor, pp. 285-291 Tweet About the Author Ralph Vary Chamberlin Species mentioned Aphonopelma geotoma (Chamberlin, 1937) Mexico Clavopelma tamaulipeca (Chamberlin, 1937) Mexico