Discovery of 195-million-year-old dolphin-like fossil that swam ‘Jurassic seas’ could rewrite ancient marine history Beneath ...

Body fossil – The remains of part (or all ... What is left behind is a hole (or cavity) in the exact shape of the organism, which is called a mold. This works he same was how if you cover a balloon ...

Without knowing anything about the biology of brachiopods, choose the fossil that is preserved as original shell material. What is your evidence (you should be able to figure this out without looking ...