Donald Baird and John R. Horner 
view. The external condyle is prolonged proximally into a hemi-conical 
swelling that plunges into the muscle scar. 
On the ventral (posterior) surface the intercondylar fossa is relatively 
broad and nearly flat-bottomed; on its inner side it extends proximally to 
end in a popliteal pit (which is more prominently marked in the Phoebus 
Landing femur than in USNM 7189 and the type of Dryptosaurus). Above 
this pit the buttressing ridge from the inner condyle swings diagonally 
across the shaft to merge with the more prominent ridge from the outer 
condyle. The condyles themselves are too badly eroded to be informative. 
cm. 
Fig. 3. Tyrannosaurid femora (distal ends) in dorsal, medial, ventral and 
lateral views. A, right femur from Phoebus Landing, ANSP 15330. B, left femur of 
Dryptosaurus aquilunguis, ANSP 9995 (type), from Barnsboro, New Jersey. Scale in 
