Rodriguez-Pascual, Fernando (27 October 2021), "The Evolutionary Origin of Elastin: Is Fibrillin the Lost Ancestor?", in Sashank Madhurapantula, Rama; Orgel P.R.O., Joseph; Loewy, Zvi (eds.), Extracellular Matrix - Developments and Therapeutics, Biochemistry, vol. 23, IntechOpen, doi:10.5772/intechopen.95411, ISBN978-1-83968-235-3, S2CID233943453
Sansom, Ivan J.; Smith, Moya M.; Smith, M. Paul (15 February 1996). "Scales of thelodont and shark-like fishes from the Ordovician of Colorado". Nature. 379 (6566): 628–630. Bibcode:1996Natur.379..628S. doi:10.1038/379628a0. S2CID4257631.
Sansom, Ivan J.; Smith, Moya M.; Smith, M. Paul (15 February 1996). "Scales of thelodont and shark-like fishes from the Ordovician of Colorado". Nature. 379 (6566): 628–630. Bibcode:1996Natur.379..628S. doi:10.1038/379628a0. S2CID4257631.
Rodriguez-Pascual, Fernando (27 October 2021), "The Evolutionary Origin of Elastin: Is Fibrillin the Lost Ancestor?", in Sashank Madhurapantula, Rama; Orgel P.R.O., Joseph; Loewy, Zvi (eds.), Extracellular Matrix - Developments and Therapeutics, Biochemistry, vol. 23, IntechOpen, doi:10.5772/intechopen.95411, ISBN978-1-83968-235-3, S2CID233943453
Sansom, Ivan J.; Smith, Moya M.; Smith, M. Paul (15 February 1996). "Scales of thelodont and shark-like fishes from the Ordovician of Colorado". Nature. 379 (6566): 628–630. Bibcode:1996Natur.379..628S. doi:10.1038/379628a0. S2CID4257631.