Carrillo-Briceño, J.D. & Villafaña, J.A. & de Gracia, C. & Flores-Alcívar, F.F. & Kindlimann, R. & Abella, J. (2020)
Diversity and paleoenvironmental implications of an elasmobranch assemblage from the Oligocene–Miocene boundary of Ecuador. PeerJ, 8, Article e9051
DOI: 10.7717/peerj.9051

Bogan, S. & Agnolín, F.L. (2022)
The fossil record of the Bramble-shark Echinorhinus (Echinorhiniformes, Echinorhinidae) in South America. Journal of South American Earth Sciences, 120, Article 104083
DOI: 10.1016/j.jsames.2022.104083