Page:Parasaurolophus walkeri, a new genus and species of trachodont dinosaur.pdf/26

COMPARATIVE MEASUREMENTS OF HUMERUS–Continued

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	Parasuarolophus walkeri	Kritosaurus incurvimanus	Saurolophus osborni
Width across inner and outer tuberosities	200	160
Width across condyles	150	–
Thickness of outer condyle (ant.-post.)	70 (?)	80
Thickness of inner condyle (ant.-post.)	88	82
Thickness of head	84	78
Thickness of inner tuberosity	40	41
Thickness of outer tuberosity	40	31

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FIG. 4.	FIG. 5.

Figure 4. Left humerus, external view. One-sixth natural size.
Figure 5. Left humerus, internal view. One-sixth natural size.

Ulna (Figs. 6 and 7; Plate VIII, Figs. 1 and 2)–This bone requires little comment: it is quite the same as in