For independent age control, we also dated calcite that had encrusted the sample (thus, providing a minimum age; = 1).
We carried out a systematic U–Th dating study (Th-age profiles across three teeth exposed in cross-section, using micro-drilling and thermal ionisation mass spectrometry.
Although vertebrate fossils are commonly abundant in museum palaeontological collections, they are only rarely accompanied by contextual data (e.g., stratigraphic and taphonomic information) that allow them to be placed independently into reliable temporal frameworks critical for testing significant evolutionary and extinction hypotheses.
Moreover, where critical samples do exist in such collections, sampling for direct geochronological analyses becomes a significant concern, especially where such sampling is destructive in nature.
For Christians, their belief system comes neatly bound in the form of Children’s Bible stories in every bookstore- but science can be more difficult to understand than faith and magic for any child. Many of the ancient Greeks believed that Zeus, Hera, and a family of gods reigned over humanity and were responsible independently for creation, rain, fire, hunting, and more; today, this belief system is referred to as a Historically, human beings have often attempted to explain the unknown with interesting tales of the supernatural…
but today, we can use scientific evidence to determine the earth’s origin, and how humans came to populate it.