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| Explorations in Turkestan : Expedition of 1904 : vol.2 |
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Citation Information
| ORDO PERISSODACTYLA. | 395 |
Table of dimensions (in millimeters)—Continued.
ASTRAGALUS.
In all we have seven well-preserved astragali, three right and four left. Their size corresponds throughout to those of the horses already mentioned.
As is known, Forsyth Major points out that in the fossil horse the length of a segment of the inner end of the navicular surface of the astragalus, counted from its intersection by an imaginary line representing the continuation of the outer surface of the inner condylus, is considerably shorter than in recent horses, and he illustrates this in a table, from which we have extracted some points giving the relation of the length of the inner segment of the navicular surface referred to its full length, which is taken as Ioo.
Relation of length of inner segment of navicular surface of astragalus to its full length
(expressed in percentages).
Posterior extremities.
Anterior extremities.
~+.; â.~
ââ
0.1
Ü w
4.4
• W
0
Ü
Phalanx III.
v r-~
4.:
~
N r-ì
~
:5
~
~
North Kurgan, Anau:
-8 feet
+5 feet
+36 feet
+23 feet
+28 feet
+33 feet
Equus przewalskii, Mus. Bern.
Equus hemionus, Mus. Paris
European diluvial horse, after Nehring
57
54
57
52
54
85
43
48
48
29
33
33
34
37
58
I20
130
135
IIO I15
55
56
48
59 6o
59 52 54 90
32
35 32 34 37 56
~5
18
13
17
Width of
distal
articulation.
Length of
interior
trochlea.
Length of
exterior
trochlea.
Astragalus.
North Kurgan, Anau:
- Io feet
+8 feet...
20 feet
23 feet
+26 feet
+33 feet
Equus przewalskii, Mus. Bern
European diluvial horses:
After Hescheler, Kesslerloch
After Nehring, Westeregeln
Vindonissa, Roman horses
44 41 48 44 48 47 51
51-54
57-60
50-59
74-78
83-84
60-63
52
55
56
53
59
52
55
48
49
54
48
51
49
51
II
16
15
17
I20
140
125 I10
115
Minimum. Mean.
Maximum.
Hipparion
Equus stenonis
Siberian horses, Yana River
Roman horses, from Vindonissa
Horses of Solutré
Horses from Cardamone
Equus caballus, recent
29.2
24.7
27.9
30.2
31.7
33.8
36.0
29.2
32.5
32.0
32.2
33.2
34.6
37.8
29.2
35.3 33.9 34.3 34.5 35.4 40.4
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