Brittle stars, or ophiuroids, are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their fl...

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meus...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

Megalodon was an prehistoric shark from the Miocene & Pliocene Periods that may have been 40 feet (12m) long or more. (There are a few scienti...

This specimen is a piece of Mexican Amber, also know as Mexican Mayan Amber. It is harder than most other ambers, which makes it less fragile and i...

Hell Creek Formation - South Dakota, Usa This Item Has Already Been Purchased By A Collector