688 TITANOTHERES OF ANCIENT WYOMING, DAKOTA, AND NEBRASKA 



505 is shown in Figure 617. Referred material of , . ^^ ' Millimeters 



,,., . -iiviAT Cervical 7, total height 585 



M. giganteus comprises a manus m the i ale Museum p^j-sal 1 total height . ... 730 



(No. 12012, fig. 619), a radius and ulna in the Came- Dorsal 4^ length of centrum 78 



gie Museum (No. 120), and a pelvis with both hind 



limbs in the University of Nebraska Museum (No. Radius and uina in the camegie Museum 



3296) The radius (Carnegie Mus. 120) is very long and 



Cervical and dorsal vertebrae in tiie Field Museum slender 



The vertebrae in the Field Museum (No. 5927) Radius length . 475 



include the seven cervicals and the first five dorsals. Radius, width at top 123 



The centra of all the vertebrae are relatively elongate. Ulna, length 595 



Figure 620. — Restorations of Brontotherium leidyi (A) and B. platyceras (B) 

 About one-thirtieth natural size. 



and the first two dorsals have very long and broad 



spines. (See fig. 618.) 



Measurements of vertebrae 



Millimeters 



Length of six cervicals (without atlas) 575 



Length of seven cervicals (with atlas) (estimated) 660 



Axis, length of centrum (excluding odontoid process) 150 



Cervical 3, length of centrum 83 



Cervical 4, length of centrum 80 



Cervical 5, length of centrum 78 



Cervical 7, length of centrum 76 



Pelvis and hind limbs in the Nebraska M 



A pelvis with both hind limbs in the Museum of the 

 University of Nebraska at Lincoln (No. 3296) is 

 referable either to M. trigonoceras or to M. giganteus. 

 All the elements are relatively long and narrow. 



Millimeters 



Pelvis, length 902 



Pelvis, width (crushed) 952 



Femur, length 762 



Tibia, length 432 



