from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any member of the Lamnidae.
Sorry, no etymologies found.
Certain living marine animals - the speedy, open-water dolphins, lamnid sharks [Great white and relatives] and scombroid fishes [the tuna-mackerel group] - possess the ichthyosaur body shape and surely move in an ichthyosaur-like way.
Something that should be more widely known about the Great white (and a few other lamnid sharks) is that it's endothermic.
Stenopterygius) grouped tightly with lamnid sharks - exactly what we would expect if both groups were hydrodynamically adapted for the same style of propulsion.