BioStor
(specimen not known in GBIF)
 | Early Mississippian blastoids from western Montana J Sprinkle and R C Gutschick (1990) Bulletin of The Museum of Comparative Zoology 152: 89-166 |
 | Three new species of leopard frogs (Rana pipiens complex) from the Mexican Plateau David M Hillis and John S Frost (1985) Occasional Papers of the Museum of Natural History University of Kansas 117: 1-14 |