Note 40 — DESCRIPTION OF A MUTILATED LOWER JAW AND TEETH, ON WHICH IS FOUNDED A SUBGENUS OF MEGATHERIOID EDENTATA, UNDER THE NAME OF MYLODON.
Reading edition
Dr. Harlan also indicates differences in certain parts of the skeleton of the New York fossils as compared with his Megx. laqueatus; but thinks them probably due to a difference in the age of the individuals: he says “There is also in Mr. Graves’ collection, in New York, a tibia, nearly perfect from the right leg; the segment of a flattened sphere, on which the external condyle of the femur moves, is rather more depressed, than in the specimen from Big-bone-cave. Other marks and peculiarities are observable on this bone, not found on that of the Megalonyx laqueatus of Big-bone-cave, but they are probably due to a difference in the age of the individuals.” Loc. cit. p. 335.