This “Callaway’s lizard” is from Early Cretaceous and was named in honor of Jack M. Callaway (1930-1997), about whom it was said that in his brief career as a vertebrate paleontologist, he did much to improve understanding of marine reptiles. The fossil was found in the Paja Formation (Upper Aptian), near Villa de Leiva, Provincia Boyaca, Colombia. It was named by Kenneth Carpenter (Denver Museum of Natural History) in 1999.