lamnidæ

pl. [Mod. Lat., ., lamn(a) (q.v.); Lat. fem. pl. adj. suff. -idæ.] 1. Ichthy .: Porbeagles; a family of Selachoidei or only minute foramina in their place. Tha (Sharks). No nictitating membrane, no spiracles, openings are usually wide. Dr. Günther divides the family into two sub-families, Lamnina and Sel a china (q. v.). 2. Palæont .: Teeth, ., belonging to the family are found in the Cretaceous and the Tertiary. lamnina