bipeds: Body Mass Estimates Using cQE, AHR1985, CF2004, and CM1992
In MASSTIMATE: Body Mass Estimation Equations for Vertebrates

Description Usage Arguments Details Value Author(s) References See Also

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

1	bipeds(FC, cQE.eq = "raw", cQE.cor = 2, data = NULL)

`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`). `"raw"` is default
`cQE.cor`	correction factor to be used (α^2). The default is 2, as per Campione et al. (2014)
`data`	an optional object of `class = "data.frame"` or `class = "matrix"`

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.

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)

Nicolas E. Campione

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. (2017) Extrapolation of a universal scaling relationship for estimating body masses in extinct terrestrial vertebrates. Paleobiology, 43, 693-699.

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

cQE AHR1985 CF2004 CM1992

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