Thaumastosaurus gezei RAGE et ROČEK, 2007

Rage, Jean-Claude, 2016, Frogs (Amphibia, Anura) From The Eocene And Oligocene Of The Phosphorites Du Quercy (France). An Overview, Fossil Imprint 72 (1 - 2), pp. 53-66 : 59

Thaumastosaurus gezei RAGE et ROČEK, 2007

( Text-fig. 4 : 1, 2)

T. gezei is known by three or perhaps five specimens from the old collections of the Phosphorites. These specimens are the holotype skull (MNHN.F.QU17376), a squamosal (MNHN.F.QU17748) ( Rage and Roček 2007), the ‘mummy’ (MNHN.F.QU17279), and perhaps a forelimb (MNHN.F.QU17280) ( Laloy et al. 2013) and another, incomplete ‘mummy’ (MNHN unnumbered, figs 406, 407, 411 in Filhol 1877) whose external morphology resembles that of MNHN.F.QU17279. Because the specimens are all from the old collections, the precise geological age of the species remains unknown. This age may range from the late middle Eocene (MP 16) to the latest Eocene (MP 19, perhaps MP 20), i.e. the maximum known range of Thaumastosaurus sp.

Figures

Text-fig. 4. Ranoids from the Phosphorites du Quercy. 1: Thaumastosaurus gezei, urostyle in left lateral (a), dorsal (b), and anterior (c) views. 2: T. gezei, left coracoid in medial view (the urostyle and coracoid are parts of the ‘mummy’ MNHN.F.QU17279). 3: Thaumastosaurus sp., left scapula UM-ECA 2537, from the late Eocene of Escamps (MP 19), in lateral (a) and medial (b) views. 4: Thaumastosaurus sp., left humerus UM-MAL 619, from the late Eocene of Malpérié (MP 17), in ventral (a) and medial (b) views. 5: Ranoid indeterminate, small-sized form, right humerus UM-LAV 1280, from the late Eocene of Lavergne (MP 16), in ventral view. 6: Ranoid indeterminate, mid-sized form, left humerus UM-ECA 2558, from the late Eocene of Escamps (MP 19), in ventral view. 7: Ranoid indeterminate, large sized form, left humerus UM-ECA 2557, from the late Eocene of Escamps (MP 19), in ventral (a) and medial (b) views. 8: Ranoid indeterminate, mid-sized form, left scapula UM-ECA 2560, from the late Eocene of Escamps (MP 19), in lateral (a) and medial (b) views. 9: Ranoid indeterminate, large-sized form, left coracoid UM-ECA 2559, from the late Eocene of Escamps (MP 19), in medial view. (1 and 2, redrawn from images segmented by F. Laloy in 2012). Each scale bar = 3 mm.