This incredible cluster of trilobites is found in it's original matrix and displays 4 complete or partial fossils throughout. This cluster comes wi...

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...

Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...