Start Dating dinosour bones

Dating dinosour bones

At that time, much of the region was part of river-plains similar to the present southeastern United States with sub-tropical climate and vegetation of the Cretaceous period or the Age of Reptiles.

The data was challenged by Thomas Stafford as poor science due to assumed contamination from modern C-14 with younger surficial calcium carbonate.

Abstract: The discovery of collagen in a Tyrannosaurus-rex dinosaur femur bone was recently reported in the journal Science.

Its geologic location was the Hell Creek Formation in the State of Montana, United States of America.

When it was learned in 2005 that Triceratops and Hadrosaur femur bones in excellent condition were discovered by the Glendive (MT) Dinosaur & Fossil Museum, Hugh Miller asked and received permission to saw them in half and collect samples for C-14 testing of any bone collagen that might be extracted.

Indeed both bones contained collagen and conventional dates of 30,890 ± 380 radiocarbon years (RC) for the Triceratops and 23,170 ±170 RC years for the Hadrosaur were obtained using the Accelerated Mass Spectrometer (AMS).

Fig.3a shows the Triceratops femur dissection using carefully cleaned saw with the bone supported by wood frame and plaster of Paris cast.

Identification of the femur was made by comparing with photos and descriptions from a standard paleontology text-book and comparison with a young adult femur, 107 cm long.

Inspection of the femur cross section in Fig.3b revealed dried up Haversian systems and very little apparent mineralization.