TABLE 2. Mean measurements of upper and lower teeth reflecting the development of efficient shearing dentitions in Dipsalidictis and Oxyaena. Measurements, except for Oxyaena woutersi
(Lange-Badré and Godinot 1982) and Oxyaena sp., are from table 12 of
Gunnell and Gingerich (1991). L/W = Length/Width; PALD = M2 paralophid length divided by M2 trigonid width (Gunnell and Gingerich 1991;
Figure 12,
Figure 13, and
Figure 14). Sample size N is given in parentheses.
Genus and species
M1 trigonid L/W
M2 trigonid L/W
PALD
Dipsalidictis krausei (Cf1-Cf3)
D kr
0.90 (5)
0.87 (4)
1.15
Dipsalidictis aequidens (Cf2-Cf3)
D ae
0.91 (6)
0.86 (7)
1.16
Dipsalidictis platypus (Cf2-Wa0)
D pl
0.89 (4)
0.86 (3)
1.16
Dipsalidictis transiens (Wa0-Wa2)
D tr
0.93 (5)
0.91 (8)
1.23
Oxyaena woutersi (MP7)
O wo
0.99 (1)
1.14 (1)
1.28
Oxyaena sp. (MP7)
O sp
1.02
-
-
Oxyaena gulo (Wa2-Wa3)
O gu
1.06 (4)
1.07 (5)
1.23
Oxyaena intermedia (Wa4-Wa5)
O in
1.09 (2)
1.08 (2)
1.25
Oxyaena forcipata (Wa5-Wa6)
O fo
1.14 (5)
1.24 (5)
1.33
Genus and species |
|
Ln P4 LxW |
Ln M1 LxW |
Ln M2 LxW |
|
Dipsalidictis krausei (Cf1-Cf3) |
D kr |
3.85 – 4.25 |
3.95 – 4.375 |
4.325 – 4.75 |
|
Dipsalidictis aequidens (Cf2-Cf3) |
D ae |
4.35 – 4.75 |
4.2 – 4.6 |
4.55 – 5.0 |
|
Dipsalidictis platypus (Cf2-Wa0) |
D pl |
3.35 – 3.8 |
3.6 – 4.00 |
3.9 – 4.3 |
|
Dipsalidictis transiens (Wa0-Wa2) |
D tr |
4.00 – 4.4 |
4.2 – 4.6 |
4.4 – 4.875 |
|
Oxyaena woutersi (MP7) |
O wo |
3.87 |
3.88 |
4.21 |
|
Oxyaena sp. (MP7) |
|
- |
- |
4.41 |
|
Oxyaena gulo (Wa2-Wa3) |
O gu |
4.4 – 4.85 |
4.4 – 4.8 |
4.65 – 5.05 |
|
Oxyaena intermedia (Wa4-Wa5) |
O in |
4.5 – 4.9 |
4.6 – 5.00 |
5.0 – 5.4 |
|
Oxyaena forcipata (Wa5-Wa6) |
O fo |
4.9 – 5.3 |
5.0 – 5.4 |
5.25 – 5.65 |