Monstersauria is a clade of varanoid lizards, defined as all taxa more closely related to Heloderma than Varanus. It includes Heloderma, as well as several extinct genera, such as Estesia, Primaderma and Gobiderma, but it was found to be polyphyletic in the most recent and complete squamate phylogenetic analysis by Reeder et al. (2015).
Temporal range: Early Miocene to Recent
|Gila monster, Heloderma suspectum|
- Tod W. Reeder; Ted M. Townsend; Daniel G. Mulcahy; Brice P. Noonan; Perry L. Wood, Jr.; Jack W. Sites, Jr.; John J. Wiens (2015). "Integrated Analyses Resolve Conflicts over Squamate Reptile Phylogeny and Reveal Unexpected Placements for Fossil Taxa". PLoS ONE. 10 (3): e0118199. doi:10.1371/journal.pone.0118199. PMC 4372529. PMID 25803280.
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