Cretaceous Dinosaurs 
7 
A maxilla tentatively attributed to Gorgosaurus by Miller (1967) is here 
reassigned to the crocodilian genus Deinosuchus and is discussed below in 
the section on non-dinosaurian remains. 
Three fragmentary femora are demonstrably carnosaurian. Two of 
these, from the marl pits of James King in Sampson County, formed part 
of the mixed lot of bones upon which Cope established Hypsibema 
crassicauda (USNM 7189). The now-missing “left tibia'’ shaft section 
(Cope 1875, PI. 6, Figs. 2-2a) appears instead to be part of a carnosaurian 
left femur. In morphology it corresponds closely to the left femur of 
Dryptosaurus aquilunguis but is slightly larger, about 10 cm rather than 9 cm 
in maximum diameter. The badly-eroded fragment that Cope (1875, PI. 
6, Figs. 1-la; our Figs. 4B-B 1 ) interpreted as the distal extremity of a right 
humerus proves on comparison to be a left femur. A more informative 
specimen is ANSP 15330 (Fig. 3A), the distal one-third of a right femur 
which Miller collected at Phoebus Landing but omitted from his papers. 
Its distal condyles are much abraded and the anteromedial ridge that 
bounds the origin of the femorotibialis muscle is broken away. So far as 
the damaged state of the specimens permits comparison, ANSP 15330 
and Cope’s “right humerus” are so nearly identical in size and 
morphological detail that they might have come from the same individual 
— although of course they were found many miles apart. 
These femora are closely comparable to that of Dryptosaurus aquilunguis , 
the type specimen of which (ANSP 9995, Fig. 3B) came from the 
“chocolate greensand bed” or New Egypt Formation of late Maestrich- 
tian age near Barnsboro, Gloucester County, New Jersey. As the 
photographs show, on the dorsal (anterior) surface the rugose area of 
origin of the femorotibialis muscle is bounded proximally by a prominent 
low welt that arcs across the face of the shaft and continues down its an- 
teromedial edge as a crest to buttress the internal condyle. The break in 
slope between shaft surface and muscle insertion is conspicuous in lateral 
Fig. 2. Dinosaur teeth from Phoebus Landing, Bladen County. A, tyran- 
nosaurid carnosaurian cf. Dryptosaurus or Albertosaurus , ANSP 15332. B, 
hadrosaurine maxillary tooth in occlusal view; C, hadrosaurine dentary tooth in 
lingual and profile views, ANSP 15333. Scale in mm. 
