Table 7. Functions for the prediction of body mass based on various G. sivalensis specimens.
| Independent (x) variable | Model sample | Model r2 | Allometric equation | Body mass prediction (kg) | Body mass PE% confidence intervals in kg (based on prediction errors when applied to G. camelopardalis data) | Body mass confidence intervals in kg (based on prediction errors when applied to O. johnstoni data |
|---|---|---|---|---|---|---|
| OR39747 (C3) vertebral body length | G. camelopardalis ontogenetic data | 0.91 | y = 0.022∗x1.919 | 575 | 8% PE (529–612) | 81% PE (109–1,041) |
| OR39747 (C3) cr dv | G. camelopardalis ontogenetic data | 0.77 | y = 0.0023∗x3.21 | 400 | 18% PE (328–472) | 87% PE (52–748) |
| OR39747 (C3) cr lat | G. camelopardalis ontogenetic data | 0.84 | y = 0.0054∗x2.967 | 228 | 14% PE (196–260) | 99% PE (2–454) |
| OR39747 (C3) cd dv | G. camelopardalis ontogenetic data | 0.69 | y = 0.0048∗x2.847 | 390 | 25% PE (293–487) | 17% PE (323–456) |
| OR39747 (C3) cd lat | G. camelopardalis ontogenetic data | 0.57 | y = 0.0227∗x2.360 | 271 | 50% PE (136–407) | 21% PE (214–328) |
| Average of OR39747 vertebral dimensions (SD) | 373 (135) | |||||
| OR39748 (C3) cd dv | G. camelopardalis ontogenetic data | 0.69 | y = 0.0048∗x2.847 | 394 | 25% PE (296–493) | 17% PE (327–462) |
| OR39747 (C4) cd dv | G. camelopardalis ontogenetic data | 0.69 | y = 0.0011∗x3.128 | 274 | ||
| OR39747 (C5) cd dv | G. camelopardalis ontogenetic data | 0.69 | y = 0.0004∗x3.285 | 187 | ||
| Humerus midshaft circumference (OR17136) | G. camelopardalis ontogenetic data | 0.98 | y = 8.96∗10−4x2.55 | 809 | 5% PE (767–851) | 5% PE (766–852) |
| Humerus midshaft circumference (OR39749) | G. camelopardalis ontogenetic data | 772 | 5% PE (732–812) | 5% PE (731–813) | ||
| Average of humeral circumferences (SD) | 791 (26) | |||||
| Humerus midshaft craniocaudal diameter (OR17136) | G. camelopardalis ontogenetic data | 0.98 | y = 3.59∗10−2x2.32 | 834 | 11% PE (743–925) | 13% PE (723–945) |
| Humerus midshaft craniocaudal diameter (OR39749) | G. camelopardalis ontogenetic data | y = 3.59∗10−2x2.32 | 602 | 11% PE (537–667) | 13% PE (522–682) | |
| Humerus midshaft transverse diameter (OR17136) | G. camelopardalis ontogenetic data | 0.96 | y = 2.00∗10−2x2.53 | 561 | 24% PE (429–693) | 22% PE (438–684) |
| Humerus midshaft transverse diameter (OR39749) | G. camelopardalis ontogenetic data | y = 2.00∗10−2x2.53 | 813 | 24% PE (622–1,004) | 22% PE (635–991) | |
| Average humeral craniocaudal and transverse (SD) | 703 (141) | |||||
| All humeral ontogenetic average (SD) | 732 (119) | |||||
| Radius midshaft circumference (OR17130) | G. camelopardalis ontogenetic data | 0.99 | y = 1.65∗10−4x2.93 | 1,179 | 10% PE (1,064–1,294) | 31% PE (726–1,390) |
| Radius midshaft craniocaudal diameter (OR17130) | G. camelopardalis ontogenetic data | 0.98 | y = 2.89∗10−3x3.19 | 847 | 12% PE (746–948) | 62% PE (416–1,780) |
| Radius midshaft transverse diameter (OR17130) | G. camelopardalis ontogenetic data | 0.99 | y = 1.18∗10−2x2.67 | 1,047 | 9% PE (948–1,146) | 19% PE (943–1,387) |
| Radius ontogenetic average (SD) | 1,024 (167) | |||||
| Metacarpal midshaft circumference (OR39750) | G. camelopardalis ontogenetic data | 0.96 | y = 4.70∗10−5x3.24 | 1,058 | 11% PE (942–1,174) | 31% PE (726–1,390) |
| Metacarpal midshaft craniocaudal diameter (OR39750) | G. camelopardalis ontogenetic data | 0.97 | y = 1.59∗10−3x3.40 | 1,098 | 21% PE (867–1,329) | 62% PE (416–1,780) |
| Metacarpal midshaft transverse diameter (OR39750) | G. camelopardalis ontogenetic data | 0.98 | y = 6.71∗10−3x2.95 | 1,165 | 20% PE (932–1,398) | 19% PE (943–1,387) |
| Average metacarpus | 1,107 (54) | |||||
| Humerus midshaft craniocaudal diameter (OR17136) | Artiodactyl interspecific allometry (Scott, 1990) | 0.94 | y = 7.63x2.455 | 1,106 | 18% PE (906–1,305) | 24% PE (844–1,368) |
| Humerus midshaft craniocaudal diameter (OR39749) | Artiodactyl interspecific allometry (Scott, 1990) | 793 | 18% PE (650–936) | 24% PE (605–981) | ||
| Humerus midshaft transverse diameter (OR17136) | Artiodactyl static interspecific (Scott, 1990) | 0.95 | y = 12.4x2.46 | 900 | 26% PE (662–1,138) | 52% PE (428–1,372) |
| Humerus midshaft transverse diameter (OR39749) | Artiodactyl interspecific allometry (Scott, 1990) | 1,268 | 26% PE (822–1,518) | 52% (603–1,933) | ||
| Humerus midshaft circumference (OR17136) | Various mammalian taxa (Roth, 1990) | 0.99 | y = 9.45∗10−4x2.61 | 1,170 | 30% PE (822–1,518) | 29% PE (831–1,509) |
| Humerus midshaft circumference (OR39749) | Various mammalian taxa (Roth, 1990) | 1,115 | 30% PE (784–1,446) | 29% PE (792–1,438) | ||
| Humerus midshaft circumference (OR17136) | Various mammalian taxa (Anderson, Hall-Martin & Russell, 1985) | 0.99 | 0.0009x2.6392 | 1,304 | 37% PE (819–1,789) | 35% PE (842–1,766) |
| Humerus midshaft circumference (OR39749) | Various mammalian taxa (Anderson, Hall-Martin & Russell, 1985) | 1,241 | 37% PE (780–1,702) | 35% PE (801–1,681) | ||
| Humerus midshaft circumference (OR17136) | Ungulates (Campione & Evans, 2012) | 0.95 | y = 1.469x2.5273 | 1,167 | 29% PE (831–1,503) | 31% PE (800–1,534) |
| Humerus midshaft circumference (OR39749) | Ungulates (Campione & Evans, 2012) | 1,113 | 29% PE (792–1,433) | 31% PE (763–1,463) | ||
| All humeral interspecific average (SD) | 1,112 (180) | |||||
| Radius midshaft craniocaudal diameter (OR 17130) | Artiodactyl static allometry (Scott, 1990) | 0.93 | y = 29.2x2.51 | 1,891 | 50% PE (946–2,837) | 54% PE (870–2,911) |
| Radius midshaft transverse diameter (OR 17130) | Artiodactyl static allometry (Scott, 1990) | 0.91 | y = 8.19x2.555 | 1,238 | 11% PE (1,102–1,374) | 43% PE (711–1,765) |
| Radial interspecific average (SD) | 1,565 (462) |
Notes.
- SD
- Standard deviation
- PE
- Prediction error