Humphreys, John

1 publication

Humphreys, John (detail)
1908The teeth of fossil fishes.
Proc. Roy. Soc. Med., Odont. Sect. 1(3): 7-16. 1 pl.
—P. 8: {"In Edentates we find the teeth of the sloths are formed of a dentine permeated by vascular canals, hence termed vaso-dentine. The megatherium, the gigantic extinct sloth of South America, exhibits this variety very clearly, in which the dentine and the cementum also were rich in looped blood-vessels which traversed the structures. "The teeth of the manatee possess similar characteristics...."}