Sander, P. M.; Griebeler, E. M.; Klein, N.; Juarbe, J. V.; Wintrich, T.; Revell, L. J.; Schmitz, L. Early giant reveals faster evolution of large body size in ichthyosaurs than in cetaceans. Science. 2021, 374 (6575). ISSN 1095-9203. doi:10.1126/science.abf5787.
Massare, J. A.; Callaway, J. M. Cymbospondylus (Ichthyosauria: Shastasauridae) from the Lower Triassic Thaynes Formation of southeastern Idaho. Journal of Vertebrate Paleontology. 1994, 14 (1): 139–141. ISSN 0272-4634. doi:10.1080/02724634.1994.10011545.
Sander, P. M.; Griebeler, E. M.; Klein, N.; Juarbe, J. V.; Wintrich, T.; Revell, L. J.; Schmitz, L. Early giant reveals faster evolution of large body size in ichthyosaurs than in cetaceans. Science. 2021, 374 (6575). ISSN 1095-9203. doi:10.1126/science.abf5787.
Massare, J. A.; Callaway, J. M. Cymbospondylus (Ichthyosauria: Shastasauridae) from the Lower Triassic Thaynes Formation of southeastern Idaho. Journal of Vertebrate Paleontology. 1994, 14 (1): 139–141. ISSN 0272-4634. doi:10.1080/02724634.1994.10011545.