Calanguban is an extinct genus of scincogekkonomorphlizard from the Early Cretaceous of South America. The type speciesCalanguban alamoi was named in 2014 from the Crato Formation of Brazil and is the oldest known non-iguanian lizard from the continent. Originally described as a scleroglossan lizard with scincomorph affinities, it likely had an arboreal lifestyle.[1] The holotype (MN 7234-V) was destroyed in 2018 due to the National Museum of Brazil fire, so a neotype (MN 7875-V) possibly from the same formation was proposed in 2025, leading to a new classification of this taxon as a borioteiioid lizard.[2]
References
↑Simões, Tiago R.; Caldwell, Michael W.; Kellner, Alexander W. A. (2014). "A new Early Cretaceous lizard species from Brazil, and the phylogenetic position of the oldest known South American squamates". Journal of Systematic Palaeontology. 13 (7): 601. doi:10.1080/14772019.2014.947342.
↑Santos, E. da S.; Ribeiro, S. C.; Saraiva, A. Á. F.; Kellner, A. W. A.; Simões, T. R. (2025). "A neotype and reassessment of phylogenetic relationships of the fossil lizard Calanguban alamoi from the Crato Formation (Early Cretaceous, Brazil)". Journal of Systematic Palaeontology. 23 (1). 2496536. doi:10.1080/14772019.2025.2496536.
