Paleontologists have discovered fossils of Heleocola piceanus ... yet Heleocola piceanus broke this mold by reaching a weight of approximately 2 pounds, similar to a muskrat.

Late Devonian brachiopod fossils were preserved as molds in a fine-grained sandstone (Big Creek, Hornell, New York, N 42.364361, W 77.645760). Individual fossil samples like this are the basis for ...

Life on Earth looks good for its age. Newly discovered fossil records hint that mold-like unicellular organisms — the common ancestor to all complex life on our planet — arrived over a billion ...