The Pipidae are a family of primitive, tongueless frogs. There are 41 species in the family, found in tropical South America and sub-Saharan Africa.
Rebbachisaurus is a genus of sauropod dinosaur of the superfamily Diplodocoidea, that lived during the Late Cretaceous period in Africa and possibly also South America about 99-97 million years ago. Remains attributed to Rebbachisaurus have been found in Morocco, Niger, Algeria, Tunisia and possibly also Argentina, although only the Moroccan remains can be referred to the genus without doubt. The discovery of Rayososaurus, a South American sauropod nearly identical to Rebbachisaurus which may have actually have been the same animal as Rebbachisaurus, supports the theory that there was still a land connection between Africa and South America during the Early Cretaceous, long after it was commonly thought the two continents had separated.
The Candeleros Formation is a geologic formation that crops out in the Río Negro, Neuquén, and Mendoza provinces of northern Patagonia, Argentina. It is the oldest formation in the Neuquén Group and belongs to the Rio Limay Subgroup. Formerly that subgroup was treated as a formation, and the Candeleros Formation was known as the Candeleros Member.
Palaeobatrachus is an extinct genus of frogs from Europe that existed from the middle Eocene to the middle Pleistocene, spanning almost 50 million years. They were obligately aquatic, and would have not spent much time on dry land. They are one of two genera and by far the largest genus in the family Palaeobatrachidae, which are considered to be members of Pipimorpha, related to the South American-African family Pipidae, which includes the African clawed frog and Surinam toad.
Rhinella, commonly known as South American toads, beaked toads or Rio Viejo toads, is a genus of true toads native to Neotropical parts of Mexico, Central and South America. Additionally, the cane toad has been Introduced to Australia, the Caribbean, the Philippines and elsewhere.
The Allen Formation is a geological formation in Argentina whose strata date back to the Late Cretaceous (middle Campanian to early Maastrichtian. Dinosaur remains are among the fossils that have been recovered from the formation. Indeterminate chelid remains and other vertebrates have also been discovered in this formation.
Saltenia is an extinct genus of frogs. It was assigned to the family Pipidae by R. L. Carroll in 1988 and again in 2005 by A. M. Báez and T. Harrison. The single described species, Saltenia ibanezi, is thought to have lived in South America in the Late Cretaceous.
Baurubatrachus is an extinct genus of prehistoric frogs found in the Maastrichtian Marília Formation of Brazil, formerly considered to be related to the extant family Ceratophryidae. However, a detailed assessment of the anatomy and relationships of the single known fossil of Baurubatrachus demonstrated that it is not part of Ceratophryidae and might be part of a much ancient group of Neobatrachia.
Nevobatrachus gracilis is the only species in the extinct genus Nevobatrachus, a genus of prehistoric frogs. The original generic name of this frog was Cordicephalus Nevo (1968); however, this generic name turned out to be preoccupied by a cestode genus Cordicephalus Wardle, McLeod & Stewart (1947), which remains nomenclaturally available in spite of being considered a junior synonym of the diphyllobothriid genus Pyramicocephalus. Mahony (2019) coined a replacement name Nevobatrachus. Fossils of N. gracilis were found in a lacustrine deposit in Makhtesh Ramon called "Amphibian Hill" and it is believed they lived during the Lower Cretaceous.
Eodiscoglossus is an extinct genus of prehistoric frogs. It is known from the type species E. santonjae from the Early Cretaceous (Barremian) El Castellar Formation of Spain, as well as a referred species E. oxoniensis known from the Forest Marble Formation of the UK and an indeterminate species from the Dzunbain Formation of Mongolia. It was a small primitive frog, with a length of only 27 mm (1.1 in) from the premaxilla to the ischium. Formerly considered to be closely related to discoglossids, E. santonjae is now regarded as close to the root of the crown group of modern frogs in a position more derived than New Zealand frogs and tailed frogs, but more basal than costatans like alytids and other more advanced frogs like neobatrachians. The morphology of E. santonjae suggests a generalist and unspecialised movement habit. The referral of E. oxoniensis to Eodiscoglossus has been questioned, as it is much earlier than the type species and it is based on homoplasic and plesiomorphic characteristics inherited from a common ancestor, so there is no clear evidence of a close relation.
Vulcanobatrachus is an extinct genus of fossil frog. The genus contains the single species Vulcanobatrachus mandelai found at Marydale, South Africa, described in 2005 and named after Nelson Mandela. The genus owes its name to the fact that fossils were recovered from an extinct volcanic crater lake of Late Cretaceous age. The fossil frogs are assumed to have died following a limnic eruption (a degassing event possibly of CO2) by the volcano.
Wealdenbatrachus is an extinct genus of prehistoric frog known from the Lower Cretaceous of Uña, Spain, which is part of the La Huérguina Formation Its anatomy and relationships have recently been revisited, finding that this frog might be a proficient jumper, and that it was a primitive frog close to the ancestry of all modern frogs.
Pachycentrata is an extinct genus of prehistoric amphibian.
Shomronella jordanica is the only species in the extinct genus Shomronella, a genus of prehistoric frogs. According to findings from fossils of S. jordanica, that were found in Jordan and Israel, the frog lived during the Lower Cretaceous, specifically in the Hauterivian to Barremian.
Shelania is an extinct genus of prehistoric frogs that lived in South America during the Eocene. Its type species is Shelania pascuali. Fossils of Shelania have been found in the Mustersan Vaca Mahuida and Laguna del Hunco Formations of Argentina. Shelania is the type taxon of the Shelaniinae, which was erected for an unranked clade that also includes the early anurans Saltenia, Kuruleufenia, and Patagopipa. A more recent phylogenetic analysis further suggested that Shelania is more closely related to Pipidae than to Palaeobatrachus, and that the second species previously attributed to Shelania is not sufficiently closely related to the type-species to be retained in Shelania.
Llankibatrachus is an extinct genus of prehistoric frogs in the family Pipidae. They are known from the Ypresian (Casamayoran) Huitrera Formation of Argentina.
Singidella is an extinct genus of prehistoric frog from the Eocene of Tanzania. There is currently only one described species, S. latecostata. Its generic name is derived from Singida, the city near which the only known specimens were found, and the specific name translates as "wide ribs" from Latin. It is a member of the family Pipidae and is closely related to the extant African dwarf frogs (Hymenochirus) and Merlin's dwarf gray frog (Pseudohymenochirus) and the Cretaceous frog Pachycentrata of Niger. Adult individuals were estimated at 41-45 mm in length from snout to vent.
Thoraciliacus rostriceps is an extinct species of frog from the Cretaceous period and the only species of the genus Thoraciliacus, which is classified in the unranked clade Pipimorpha. A recent phylogenetic analysis confirmed this conclusion, and further suggested that Thoraciliacus rostriceps is more closely related to Pipidae and Shelaniinae than to Palaeobatrachus. Fossils of T. rostriceps were found in Makhtesh Ramon, Negev Desert, Israel and it is believed they lived during the Barremian. Other fossils have been found near Marydale, South Africa in an Upper Cretaceous lake.
Pipoidea are a clade of frogs, that contains the most recent common ancestor of living Pipidae and Rhinophrynidae as well as all its descendants. It is broadly equivalent to Xenoanura.
The Cañadón Asfalto Basin is an irregularly shaped sedimentary basin located in north-central Patagonia, Argentina. The basin stretches from and partly covers the North Patagonian Massif in the north, a high forming the boundary of the basin with the Neuquén Basin in the northwest, to the Cotricó High in the south, separating the basin from the Golfo San Jorge Basin. It is located in the southern part of Río Negro Province and northern part of Chubut Province. The eastern boundary of the basin is the North Patagonian Massif separating it from the offshore Valdés Basin and it is bound in the west by the Patagonian Andes, separating it from the small Ñirihuau Basin.
