I have been trying to imagine what the creature looked like that this fossilized jaw belonged to. It is some sort of scolecodont (maybe an...

Here are pictures of two Texas ammonite fossils. This fossil is from the Cretaceous Period that was found in Tarrant County, Texas. Thanks ...

This fossil is a Echinoderm (sea urchin) called Hemiaster sp. It existed in the Cretaceous Period about 100,000,000 years ago. The fossil...