Note 549 — Chapter XV
Reading edition
These remarks are based on M. Agassiz’s description and my own observations. An interesting paper, "On the Microscopic Structure of the Teeth of the Lepidostei, and their analogy with those of the Labyrinthodonts, with a plate," by Dr. Jeffries Wyman, will be found in Amer. Journ. of Science, October, 1843, p. 359.