A unique dentary suggests a third genus of batrachosauroidid salamander existed during the latest Cretaceous in the western USA Author Gardner, James D. text Acta Palaeontologica Polonica 2022 2022-03-30 67 1 35 50 http://dx.doi.org/10.4202/app.00926.2021 journal article 10.4202/app.00926.2021 1732-2421 10981042 Family Batrachosauroididae Auffenberg, 1958 Remarks .— Batrachosauroididae are an extinct family of neotenic salamanders reliably known by isolated bones and rare skeletons from the Aptian/Albian–late Miocene of North America, the Campanian–late Miocene of Europe, and, potentially, back into the Bathonian–Berriasian of Europe (e.g., Auffenberg 1958 ; Estes 1969a , 1981 ; Naylor 1981 : table 1; Duffaud 1995 ; Milner 2000 ; Evans and McGowan 2002 ; Holman 2006 ; Oreska et al. 2013 ; Vasilyan and Yanenko 2020 ). The family contains six named genera (e.g., Estes 1981 ; Naylor 1981 ; Denton and O’Neill 1998 ; Milner 2000 ; Vasilyan and Yanenko 2020 ): Batrachosauroides Taylor and Hesse, 1943 (two species: early Eocene–middle Miocene, southern and western USA ); Opisthotriton Auffenberg, 1961 (one species: middle/late Santonian–late Paleocene) and Prodesmodon Estes, 1964 (one species: middle/late Campanian–early Paleocene), both in the North America Western Interior; Peratosauroides Naylor in Estes, 1981 (one species: late Miocene, California , USA ); Parrisia Denton and O’Neill, 1998 (one species: Campanian, New Jersey , USA ); and Palaeoproteus Herre, 1935 (three species: late Paleocene–early Miocene, Austria , France , Germany , and Ukraine ).