Was Tyrannosaurus Rex Warm-Blooded?
Data frame with measurements of oxygen isotopic composition of vertebrate bone phosphate (per mil deviations from SMOW) in 12 bones of a singe Tyrannosaurus rex specimen
ex0523
A data frame with 52 observations on the following 2 variables.
Oxygen
oxygen isotopic composition
Bonegrp
a factor with levels "Bone1"
,
"Bone2"
, ..., "Bone12"
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
Barrick, R.E. and Showers, W.J. (1994). Thermophysiology of Tyrannosaurus rex: Evidence from Oxygen Isotopes, Science 265(5169): 222–224.
str(ex0523)
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