AHR1985: Body Mass Estimates Using Anderson et al. (1985)

In MASSTIMATE: Body Mass Estimation Equations for Vertebrates

Description

This function estimates body mass based on humeral and/or femoral circumferences using the quadrupedal and bipedal equations of Anderson et al. (1985)

Usage

AHR1985(HC = NULL, FC, equation = c("bip", "quad"), data=NULL)

Arguments

HC	an optional value or vector representing humeral circumference (in mm)
FC	a value or vector representing femoral circumference (in mm)
equation	desired estimation equation. Two possible choices: "quad", "bip"
data	an optional object of class = "data.frame" or class = "matrix"

Details

If equation = "bip" then only femoral circumference is needed. Both humeral and femoral circumference are needed to estimate body mass of a quadruped (equation = "quad"). If a data object is specified, the mass estiamtes will be added as a column to the data.frame or matrix within that object.

Value

AHR1985

A numeric value or vector representing the mass estimate(s) in grams

Author(s)

Nicolas E. Campione

References

Anderson, J. F., Hall-Martin, A. and Russell, D.A. (1985) Long-bone circumference and weight in mammals, birds and dinosaurs. Journal of the Zoological Society of London A, 207, 53-61.

See Also

QE cQE quadrupeds bipeds CM1992 CF2004 MCF2004

Examples

##Quadrupedal dinosaurs
data(dinos)
AHR1985(dinos$HC, dinos$FC, equation = "quad", data = dinos)

##Bipedal dinosaurs
data(dinosbip)
AHR1985(HC=NULL, dinosbip$FC, equation = "bip", data = dinosbip)

Example output

          Taxon    HC  FC     AHR1985
1     Iguanodon 337.5 490  7204456.93
2 Corythosaurus 237.5 365  3029544.62
3 Protoceratops  64.0  86    68049.31
4 Styracosaurus 280.0 365  3649157.63
5   Triceratops 345.0 436  6152220.96
6   Stegosaurus 330.0 345  4131368.20
7    Diplodocus 410.0 490  9061010.91
8  Brachiosaurs 654.0 730 29335677.91
                    Taxon    FC   cor    AHR1985
1              Fruitadens  19.6 2.000     539.48
2           Lesothosaurus  41.5 1.987    4182.07
3            Jeholosaurus  50.2 2.000    7031.39
4          Gasparinisaura  55.0 2.000    9022.15
5              Stegoceras  60.5 2.008   11703.40
6           Hypsilophodon  70.0 2.020   17427.60
7           Homalocephale  83.0 2.000   27746.18
8              Dryosaurus 138.0 2.020  111170.58
9          Thescelosaurus 183.0 2.010  240221.27
10        Massosspondylus 209.0 2.000  345238.60
11           Plateosaurus 253.0 1.987  581619.56
12               Mahakala  19.9 2.000     562.33
13           Velociraptor  64.0 2.008   13645.56
14           Ornithomimus 110.0 2.008   59857.97
15            Deinonychus 116.0 1.987   69197.48
16          Herrerasaurus 170.0 2.020  196447.06
17             Gallimimus 216.0 2.000  377727.60
18          Majungasaurus 323.0 2.000 1133033.81
19            Carnotaurus 325.0 2.020 1152289.38
20          Gigantoraptor 349.0 2.000 1399694.96
21          Albertosaurus 340.0 1.865 1303339.11
22             Allosaurus 381.0 1.865 1778464.36
23         Daspletosaurus 390.0 2.000 1895511.22
24            Gorgosaurus 394.0 1.970 1949057.57
25             Suchomimus 408.0 1.766 2143987.40
26       Acrocanthosaurus 427.0 1.987 2427661.22
27             Mapusaurus 455.0 2.000 2887294.58
28           Tyrannotitan 500.0 2.000 3735150.41
29         Giganotosaurus 521.0 2.010 4179140.45
30  TyrannosaurusFMNH2081 579.0 1.815 5574840.70
31 TyrannosaurusRSM2523.8 570.0 1.987 5341439.81
32    TyrannosaurusCM9380 534.0 1.987 4470000.94
33    TyrannosaurusMOR555 520.0 1.987 4157278.42
34   TyrannosaurusBHI3033 505.0 1.970 3838004.19

MASSTIMATE documentation built on Jan. 8, 2021, 2:22 a.m.