HOLLAND AND PETERSON: OSTEOLOGY OF THE CHALICOTHEROIDEA. 279 
Length of centrum along inferior surface. ..... 43 380 40 85 23 30 17 
Vertical diameter of anterior face of centrum... 62 40 68 50 35 40 35 
Transverse diameter of anterior face of centrum 45 35 40 45 30 38 33 
Vertical diameter of posterior face of centrum 
including faces for head of ribs........... 65 40 60 47 40 40 38 
Transverse diameter of posterior face of centrum 102 77 ~—«:100 95 80 83 75 
Vertical diameter of neural canal............. 25 30 33 28 25 28 23 
Transverse diameter of neural canal.......... 39 35 35 35 25 33 22 
Antero-posterior diameter of prezygapophyses.. 38 20 26 20 18 20 17 
Transverse diameter of prezygapophyses....... 37 30 40 35-38 29 32 24 
Distance across prezygapophyses............. 104 5) Lil 105 95 96 76 
Antero-posterior diameter of postzygapophyses. 30 22 40 v.31, 1.20 28 r. 29, 1. 25 18 
Transverse diameter of postzygapophyses...... 24 22 7A) Te, PPA, Ik PAs) AD) ving BLO), I, AB ve, TB. I U7/ 
Distance across postzygapophyses............ 69 62 77 62 57 73 45 
Transverse diameter of anterior face for head of 
TU We raniy. aan ener BR sth cc A eae Me a 80 20 20 20 20 25 13 
Horizontal diameter of anterior face for head of 
TG) is teat CMR eytlay CSI eI oe eA eae a 26 25 28 30 20 28 18 
Vertical diameter of posterior face for head of rib 29 25 32 a ne 25 
Transverse diameter of posterior face for head ; 
OLSET Dee te en Ne ree tn te pen ce bya ss ee. 23 17 25 19 
Antero-posterior diameter of face for tubercle 
Ofg Ti ie tee ai erent rene eRe aE, 23 26 38 ek 30 37 25 
Transverse diameter of face for tubercle of rib.. 26 20 30 ae 20 25 15 
Transverse diameter of pedicel............... 40 30 40 35 35 31 26 
Antero-posterior diameter of pedicel at nar- 
NOWESUADAT UMMM eam oR A TT ches, Weer: 33 20 22 20 20 20 17 
Distance between faces for head of ribs........ 10 10 15 15 10 13 a 
Height of spine from neural canal to extremity. 235 160 217 214 153 176 128 
Antero-postero diameter of spine above neural 
Coie Gea ia orci meee eo a ee 53 30 55 40 30 35 30 
Antero-posterior diameter of spine at top...... 40 20 35 48 20 31 20 
Third Dorsal Vertebra. 
Three specimens of the third dorsal vertebra of Moropus were found in the 
Agate Spring Quarry, Nos. 1604, 1703B (see Fig. 48), and 1712. Of these speci- 
mens No. 1712 is in almost perfect condition (see Fig. 43, 3), the top of the spine 
and the front of the centrum having sustained some slight injury, but not enough 
to make it impossible to almost exactly approximate its length. In specimen 
No. 1604 we have the posterior and upper portions of the centrum, the pedicel, 
the prezygapophyses, and the postzygapophyses, and the lower half of the spine. 
The front of the centrum, the extremities of the transverse processes, and the 
upper half of the spine have been restored. 
