Sebastián Apesteguía en Fernando E. Novas – Large Cretaceous sphenodontian from Patagonia provides insight into lepidosaur evolution in Gondwana – Website
(en) Russell, Matt, Tuatara, Relics of a Lost Age. web.archive.org. CBN Archives - Natural History (1 december 2010). Gearchiveerd op 1 december 2010. Geraadpleegd op 18 december 2020.
Hilary C. Miller, Ailis M. Conrad, Stephen C. Barker & Charles H. Daugherty – Distribution and phylogenetic analyses of an endangered tick, Amblyomma sphenodonti – Website (samenvatting)