This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
J. Chen, 2016 - A burrowing frog from the late Paleocene of Mongolia uncovers a deep history of spadefoot toads (Pelobatoidea) in East Asia - Scientific Reports (6), 19209-7 (journal article, English)
M. Böhme, 2010 - Ectothermic vertebrates (Actinopterygii, Allocaudata, Urodela, Anura, Crocodylia, Squamata) from the Miocene of Sandelzhausen (Germany, Bavaria) and their implications for environment reconstruction and palaeoclimate - Paläontologische Zeitschrift (84), 3-41 (journal article, English)
A. C. Henrici, 2009 - Reassessment of Scaphiopus neuter Kluge, 1966 (Anura: Pelobatoidea: Pelobatidae), based on new material from Anceney, Montana (early Barstovian) - Annals of Carnegie Museum (78), 273-287 (journal article, English)
A. C. Henrici, 2006 - Elkobatrachus brocki, a new pelobatid (Amphibia: Anura) from the Eocene Elko Formation of Nevada - Annals of Carnegie Museum (75), 11-35 (journal article, English)
B. Sanchiz, 1998 - Salientia - Handbuch der Palaoherpetologie (4), - (serial monograph, English)
N. Frank, 1996 - A Complete Guide to Scientific and Common Names of Reptiles and Amphibians of the World - (), 1-377 (book, English)
R. L. Carroll, 1988 - - Vertebrate Paleontology and Evolution (), 1-698 (compendium, English)
J. Sudre, 1969 - Les gisements de Robiac (Eocène supérieur) et leurs faunes de Mammifères - Palaeovertebrata (2), 95-156 (journal article, French)
A. G. Kluge, 1966 - A new pelobatine frog from the lower Miocene of South Dakota with a discussion of the evolution of the Scaphiopus-Spea complex - Los Angeles County Museum Contributions in Science (113), 1-26 (journal article, English)
J. D. Lynch, 1965 - The Pleistocene amphibians of Pit II, Arredondo, Florida - Copeia (1965), 72-77 (journal article, English)
R. Estes, 1964 - Lower vertebrates from the Valentine Formation of Nebraska - American Midland Naturalist (72), 453-472 (journal article, English)
J. A. Tihen, 1960 - On Neoscaphiopus and other Pliocene pelobatid frogs - Copeia (1960), 89-94 (journal article, English)
R. G. Zweifel, 1956 - Two pelobatid frogs from the Tertiary of North America and their relationships to fossil and recent forms - American Museum Novitates (1762), 1-45 (journal article, English)
E. H. Taylor, 1942 - Extinct toads and frogs from the Upper Pliocene deposits of Meade County, Kansas - The University of Kansas Science Bulletin (28), 199-235 (journal article, English)
G. K. Noble, 1924 - A new spadefoot toad from the Oligocene of Mongolia, with a summary of the evolution of the Pelobatidae - American Museum Novitates (132), 1-15 (journal article, English)
E. Boscà, 1877 - Catálogo de los reptiles y anfibios observados en España, Portugal é Islas Baleares - Anales de la Sociedad Española de Historia Natural (6), 39-68 (journal article, English)
E. D. Cope, 1875 - Check-list of North American Batrachia and Reptilia; with a systematic list of the higher groups, and an essay on geographical distribution. Based on the specimens contained in the U. S. National Museum - Bulletin of the United States National Museum (1), 1-109 (journal article, English)
J. J. Tschudi, 1838 - Classification der Batrachier, mit Berucksichtigung der fossilen Thiere dieser Abtheilung der Reptilien - (), - (book, German)