A new fossil has been added to the ministry’s Mobile Museum of Earth History – sauropod coprolite. The term “coprolite” comes from joining two Greek words: kopros (“dung”) and lithos (“stone”). Several checks can be performed to confirm whether or not a specimen is actual fossilized “dino poo poo” (as we say in VBS) or just a rock. Shape is the first check, followed by examination for contents (such as digested plant or animal material), and possible X-ray fluorescence analysis, in which calcium and phosphorous remains are detected.
However, identifying from what creature the coprolite originated is not as easy. Just because a coprolite specimen may be found in the vicinity of a T. rex, that does not guarantee it came from that T. rex. What if it was deposited by another creature, but the T. rex was running by right when it and the coprolite were both rapidly buried by mud and water? It would then be a false identification to claim it is T. rex coprolite.