Monstersauria

Description:

Description: Italiano: Various skeletal elements from taxa within Monstersauria illustrating the variation in the osteoderms. A, B. Eurheloderma gallicum Hoffstetter, 1957, Phosphorites du Quercy, France, “san precision de gisement”; maxillae with attached osteoderms. A. Left maxilla, unknown specimen number. B. Right maxilla, holotype, MNHN; from Hoffstetter 1957; see Augé (2005) for discussion. C. Paraderma bogerti Estes, 1964, UCMP locality V−5817; maxilla UCMP 542610 with attached osteoderms (from Estes 1964). D, G. Lowesaurus matthewi (Gilmore, 1928) Lewis Creek, Logan County, Colorado, Oreodon Zone, White River formation. D. Right frontal, KUVP 49651 showing detail of large osteoderms (from Pregill et al. 1986). G. Right maxilla, UNSM 50011 with large fused osteoderms (from Yatkola 1976). E, F. Heloderma texana Stevens, 1977, Castolon Local Fauna, Delaho Formation, Texas. E. Cranial bone TMM 40635−119 with fused osteoderms illustrating the ring−extension around the individual osteoderms. F. Holotype skull TMM 40635−123. Date: 30 November 2016. Source: Mead, J.I., Schubert, B.W., Wallace, S.C., and Swift, S.L. 2012. Helodermatid lizard from the Mio−Pliocene oak−hickory forest of Tennessee, eastern USA, and a review of monstersaurian osteoderms. Acta Palaeontologica Polonica 57 (1): 111–121. Author: Mead, J.I., Schubert, B.W., Wallace, S.C., and Swift, S.L.