# Body Mass Estimates Using cQE, AHR1985, CF2004, and CM1992

### Description

This function returns body mass estimates for bipeds based on minimum femoral circumference using a set of five equations (intended for non-avian dinosaurs)

### Usage

1 |

### Arguments

`FC` |
a value or vector representing femoral circumference (should be in mm) |

`cQE.eq` |
desired estimation equation for the cQE. Two possible choices (See |

`cQE.cor` |
correction factor to be used ( |

`data` |
an optional object of |

### Details

This function returns estimates from five equations intented for terrestrial bipeds (in particular non-avian dinosaurs): Campione et al. (2014); Campione (in review); Anderson et al. (1985); Christiansen and Farina (2004); Campbell and Marcus (1992). For more details please see the specific functions.

If a data object is specified, the mass estiamtes and additional results will be added as columns to the data.frame or matrix within that object.

### Value

Nine numeric values or columns are returned (all masses are in grams):

`cQE` |
A numeric value or vector of mass estimates using cQE |

`upper.cQE` |
A numeric value or vector representing the upper prediction error of the cQE based on that derived for the specific equation in Campione and Evans (2012) |

`lower.cQE` |
A numeric value or vector representing the lower prediction error of the cQE |

`qcQE` |
A numeric value or vector of mass estimates using qcQE (quadratic equation) |

`upper.qcQE` |
A numeric value or vector representing the upper prediction error of qcQE derived for the specific equation in Campione (in review) |

`lower.qcQE` |
A numeric value or vector representing the lower prediction error of qcQE |

`AHR1985` |
A numeric value or vector of mass estimates using Anderson et al. (1985) |

`CF2004` |
A numeric value or vector of mass estimates using Christiansen and Farina (2004) |

`CM1992` |
A numeric value or vector of mass estimates using Campbell and Marcus (1992) |

### 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.

Campbell Jr., K.E. and Marcus, L. (1992) The relationships of hindlimb bone dimensions to body weight in birds. Natural History Museum of Los Angeles County Science Series, 36, 395-412.

Campione, N. E., Evans, D. C., Brown, C. M. and Carrano, M. T. (2014) Body mass estimation in non-avian bipeds using a theoretical conversion to quadruped stylopodial proportions. Methods in Ecology and Evolution, 5(9), 913-923.

Campione, N. E. (in review) Extrapolation of a universal scaling relationship for estimating body masses in extinct terrestrial vertebrates.

Christiansen, P. and Farina, R. A. (2004) Mass prediction in theropod dinosaurs. Historical Biology, 16, 85-92.

### See Also

`cQE`

`AHR1985`

`CF2004`

`CM1992`