Mollusc phylum is one of the most adaptive animal groups on Earth.They occupy and thrive in incredibly diverse habitats.My thanks to both him and other critics for motivating me.Much of the Earth's geology consists of successional layers of different rock types, piled one on top of another.Cave deposits also often have distinctive structures of their own (e.g., spelothems like stalactites and stalagmites), so it is not likely that someone could mistake them for a successional sequence of rock units. Each of them is a testable hypothesis about the relationships between rock units and their characteristics.They are applied by geologists in the same sense that a "null hypothesis" is in statistics -- not necessarily correct, just testable.
Geochronologists do not claim that radiometric dating is foolproof (no scientific method is), but it does work reliably for most samples.
Radiocarbon Dating is the method for dating analysis using C content, we can estimate how long ago the fossils died.
Radiocarbon dating is an extremely useful technique for determining the ages of geological materials (that have some organic-derived carbon in them).
A common form of criticism is to cite geologically complicated situations where the application of radiometric dating is very challenging.
These are often characterised as the norm, rather than the exception.