ORDO PERISSODACTYLA. 387 
Dimensions in millimeters of teeth of upper maxilla. 



















ow 5 rh 
N ae cid Equus caballus. Se : . = oi 
eal 2 | S186 
cio Altai | Western E sf § S ea 
= , ic) 7 
pi —24| +15] after vir i pi Tar- | 98°39] g | g mee 
trench. sect cet Seay Tscher- | Tscher- | P#7: | & 4 oe tag 3 
cary skis, etski. Me Peps ie 
Premolar 2: | 
Mength of crown. ............ 38 ok eae eee Mae ‘Gerry 34-5 | 37 36.7 |35-7/36 | 40 
RIG GO (CLOW flies cieccis se aise e 26 26 ore 30 eit 21 22.5; 24 (|20.7/25 | 21 
Length of interior pillar from ! 
PROM ESCORDACK enets) oie ses strane 9 6 Bie eae 10.3 AAtse 8.5 8.5 8 7.5| 8 
Length, posterior end of crown 
tonext point of bottom of an- | 
terior-interior enamel creek..| 19 16 aerate 22 | Sea 18.5 | 20 19 |17.7|20 
Same measure to end of ante- 
rior lobus of interior pillar...| 21 17 Pate 23 Cer 19 21 1927 LOM I2Z0.5 
Premolar 3: | 
Length Of CROW. ceo ocs be bs 32 Boer eras SYlSh  ape5 27 29 26.5 |26 |28.5| 27 
DRIAL NE STOW So6°5 Hoven VS didn. 28 SS aah Mb Hee Behe a3 e275 2555 27 27-5 |25 '26.5| 23 
Length of interior pillar from | 
PLOMIUOLDACK:. een pee ttels siete 12  onstish Wpbewete Le See 12 a5 1285 10 10.5 |£0.7|11 
Length, posterior end of crown 
tonext point of bottom of an- 
terior-interior enamel creek..| 19 eel iis. peng 22.8 Reece L7 20 18.7 |18 |19.3 
Same measure to end of ante- 
rior lobus of interior pillar....| 23 Pi Beolit nytt 29 oa ene aM 21/28 ME2Or suet a n22 
Premolar 4: 
WenetiOr crown. s<.0..55 600s s 28 27 27 30 27 26 26003) |\e2 See 2 One 26.7 hae 
WidtirofsCrOwl. voce patie. ss. 2G) 26 25 33 2 2S eS eeZ Ons ake 7a loz 26 ae 
Length of interior pillar from 
pee ee Week OL, ale oe. I4 ji) 103 17 13 Line ey LIeSir2: [12 
Length, posterior end of crown 
tonext point of bottom of an- 
terior-interior enamel creek..| 18 7; 19 Pig ore 17 TS 5elel 7 D7 SLOMS 
Same measure to end of ante- ‘ 
rior lobus of interior pillar...) 23 22 22 2 Bina 21 21 2) 27, 343 
Molar 1: 
AETISTM OL CLOW ce, se oes 25 26 ees 26.3 2287 23 23 220 22e aie 
Wadth of Crow... 2.25. fal) 23 26 eetats 31 ZnS 23 24. Sls Gaeta 52S 
Length of interior pillar from 
AEOL CR COLOACK ites cis) se es << oe 12 13 era 15 1255 13 IO 1635 12 Arb73 
Length, posterior end of crown 
tonext point of bottom of an- 
terior-interior enamel creek..| 16 PRG taco 20.5 Ee ats iG fils 17 16 16 |17 
Same measure to end of ante- 
rior lobus of interior pillar....} 19 20 cates 2425 Mer ere OMe | wie TOMNTOR SIL ONS 
Molar 2: 
Weuctarorcrowl sees a... o. 27 ae 23 28 25 22 SN 2403 P22 ne 1295 52525 
Pe maRT OL CTOWN 5. 5. cat cy pae sé 24 25 24 30 ae 245° a 24 24 |25 (24.8 
Length of interior pillar from 
ROORUILO WACK fons ie aie hx be! 12 I4 10 7 14.5 13250 | 10-7 tI oe) Nes 
Length, posterior end of crown 
to next point of bottom of an- 
terior-interior enamel creek..| 16 15 16 2009 Sian 16.5 17 16 Fea) 
Same measure to end of ante- 
rior lobus of interior pillar... .| 20 19.5} 19 27 AE 20.5 | 19 IO, aL, pr 
Molar 3: 
ene thcot CeOwnl sygeirce secs: « 25 24 sae 32 nee 25 s5 ea 0 25 27.5124 
BEM OU CLOW 5 coc ods s,s x 21 20 eras 277(R) Mise eas Mie 21 Sous 
Length of interior pillar from 
RLOMELLO: PACK eit an cove sya +i peerene 10 HAE L7ia3 ants 13.8 II 13 T3253 
Length, posterior end of crown 
tonext point of bottom of an- 
terior-interior enamel creek..| .... 19 mare DAES ae, 17 2208) NaI See i2On 515 
Same measure to end of ante- 
rior lobus of interior pillar....| .... 22 ee 29.5 mae ZONA 2 565220024, S19 







