Table 1. Measurements of teeth (in mm) of lagomorphs from Ula Usu, Inner Mongolia; asterisk indicates estimated measurement; tri, trigonid; tal, talonid.

Lower teeth   Length  Width
(tri/tal)
Gobiolagus burkei
AMNH 141275 p3-m3 7.75  
(holotype) p3 1.35 1.12
  p4 1.40 1.66/1.20
  m1 1.42 1.93/1.29
  m2 1.87 2.06/1.66
  m3 1.43 1.12/0.89
AMNH 141276 m1 1.59 2.05/1.39
  m2 1.79 2.20/1.61
G. tolmachovi
AMNH 141288 p3 1.69 1.35
  p4 1.75 1.94/1.45
  m1 2.22 2.54/1.71
AMNH 141289 m1 2.37 2.83/1.77
AMNH 141290 p4 2.08 2.34*/1.82
  m1 2.04 3.01/2.15
  m2 2.85 3.23/2.44
AMNH 141291 m1 2.06 2.98//2.02
  m2 2.93 3.02/2.28
  m3 1.88 1.65/1.31
AMNH 141292 p4 1.64 1.93/1.36
  m1 2.17 2.65/1.60
AMNH 141294 m1 1.99 2.33/1.64
AMNH 141295 p4 1.54 1.61/1.24
  m1 2.01 2.41/1.53
  m2 2.32 2.54/1.78
Upper teeth of G. tolmachovi
    Length  Width
AMNH 141277 P4 1.82 4.61
  M1 2.08 5.64
  M2 1.94 4.84
AMNH 141278 P4 1.84 4.42
  M1 2.31 4.35*
  M2 2.16 4.30
AMNH 141279 P4 1.82 4.14
  M1 1.98 4.72
  M2 1.98 4.12*
AMNH 141281 P3 1.60 3.68
  P4 1.70 4.21
AMNH 141282 P4 1.84 4.43
AMNH 141283 P3 1.50 3.14
  P4 1.60 3.77
  M1 1.82 5.22
AMNH 141284 P4 1.59 4.08
  M1 1.81 4.63
  M2 1.93 4.52*
AMNH 141286 P4 1.63 5.02
AMNH 141287 M1 1.90 5.13
  M2 1.70 4.78