Dictionary of Ichthyology |
tooth series = in sharks, the line of teeth parallel to the jaw axis, comprising several different rows. |
Odontaspis americanus (= O. taurus), 1 = teeth in use, 2 = teeth in reserve, 3 = skin, 4 = jaw cartilage, 5 = encrusting calcification of cartilage, 6 = connective tissue, 7 = mucous membrane; from "The Vertebrate Skeleton" by S. H. Reynolds, 1913. Photograph by Brian W. Coad.....more |