Two new bird genera from the Pleistocene of Mexico, pp. 43-46. The Pleistocene birds of San Josecito Cavern, Mexico, pp. 143-168. University of California Publications in Zoology, 47 1942: Unpaginated. [Zoological Record Volume 84]
Two new Bird genera from the Peoistocene of Mexico. University of California Publications in Zoology, 47 1942: pp. 43-46. [Zoological Record Volume 79]