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.
D. C. Blackburn, 2019 - The Earliest Fossil of the African Clawed Frog (Genus Xenopus) from Sub-Saharan Africa - Journal of Herpetology (53), 125-130 (journal article, English)
A. M. Aranciaga Rolando, 2019 - A new pipoid frog (Anura, Pipimorpha) from the Paleogene of Patagonia. Paleobiogeographical implications - Comptes Rendus Palevol (), - (journal article, English)
M. Delfino, 2018 - A Late Miocene pipine frog from the Urumaco Formation, Venezuela - Ameghiniana (), - (journal article, English)
R. O. Gómez, 2016 - A new pipid frog from the Upper Cretaceous of Patagonia and early evolution of crown-group Pipidae - Cretaceous Research (62), 52-64 (journal article, English)
J.-C. Rage, 2008 - Amphibians and squamates from the Cretaceous (Cenomanian) of Morocco - Palaeontographica Abteilung A (285), 1-22 (journal article, English)
C. Gissi, 2006 - Mitochondrial phylogeny of Anura (Amphibia): a case study of congruent phylogenetic reconstruction using amino acid and nucleotide characters - Gene (366), 228-237 (journal article, English)
L Trueb, 2005 - A new pipoid anuran from the Late Cretaceous of South Africa - Journal of Vertebrate Paleontology (25), 533-547 (journal article, English)
A. M. Báez, 2005 - A new pipine frog from an Eocene crater lake in north-central Tanzania - Palaeontology (48), 723-737 (journal article, English)
S. Hoegg, 2004 - Phylogeny and comparative substitution rates of frogs inferred from sequences of three nuclear genes - Molecular Biology and Evolution (21), 1188-1200 (journal article, English)
A. M. Báez, 2003 - Ontogeny of a new Palaeogene pipid frog from southern South America and xenopodinomorph evolution - Zoological Journal of the Linnean Society (139), 439-476 (journal article, English)
K.-Q. Gao, 2001 - Mesozoic anurans from Liaoning Province, China, and phylogenetic relationships of archaeobatrachian anuran clades - Journal of Vertebrate Paleontology (21), 460-476 (journal article, English)
A. C. Henrici, 2001 - First occurrence of Xenopus (Anura: Pipidae) on the Arabian Peninsula: a new species from the Upper Oligocene of Yemen - Journal of Paleontology (75), 870-882 (journal article, English)
A. M. Báez, 1998 - Pipid frogs from the Upper Cretaceous of In Beceten, Niger - Palaeontology (41), 669-691 (journal article, English)
B. Sanchiz, 1998 - Salientia - Handbuch der Palaoherpetologie (4), - (serial monograph, English)
A. M. Baez, 1998 - A new Paleogene pipid frog from northwestern Patagonia - Journal of Vertebrate Paleontology (18), 511-524 (journal article, English)
A. C. Henrici, 1998 - A new pipoid anuran from the Late Jurassic Morrison Formation at Dinosaur National Monument, Utah - Journal of Vertebrate Paleontology (18), 321-332 (journal article, English)
A. M. Baez, 1997 - Redescription of the Paleogene Shelania pascuali from Patagonia and its bearing on the relationships of fossil and Recent pipoid frogs - Scientific Papers, Natural History Museum, University of Kansas (4), 1-41 (journal article, English)
N. Frank, 1996 - A Complete Guide to Scientific and Common Names of Reptiles and Amphibians of the World - (), 1-377 (book, English)
A. C. Henrici, 1993 - Catastrophic death assemblage of Chelomorphrynus bayi (Anura, Rhinophrynidae) from the Middle Eocene Wagon Bed Formation of central Wyoming - Journal of Paleontology (67), 1016-1026 (journal article, English)
R. L. Carroll, 1988 - - Vertebrate Paleontology and Evolution (), 1-698 (compendium, English)
R. Estes, 1978 - Early Cretaceous pipid tadpoles from Israel (Amphibia: Anura) - Herpetologica (34), 374-393 (journal article, English)
R. Estes, 1975 - Xenopus from the Palaeocene of Brazil and its zoogeographic importance - Nature (254), 48-50 (journal article, English)
J. A. Holman, 1963 - A new rhinophrynid frog from the early Oligocene of Canada - Copeia (1963), 706-708 (journal article, English)
M. K. Hecht, 1959 - Amphibians and Reptiles (in: The Geology and Paleontology of the Elk Mountain and Tabernacle Butte area, Wyoming) - Bulletin of the American Museum of Natural History (117), 130-176 (book chapter, 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)