F129 – Richard D. Little Geology Collection

Sample ID F129 • Cabinet M

Pygidium dipleura

10.89cm W x 4.8cm H x 7.15cm D • 434g

Sample Type	Fossil	Fossil Type	Altered hard parts		Mohs Hardness		2
Domain	Eukaryota	Kingdom	Animalia	Phylum	Arthropoda	Class	Trilobita
Order	Phacopida	Family	Homalonotidae	Genus	Dipleura	Species	D. dekayi
Distribution/Period		North America, Parts of South America and Europe, Middle Devonian			Habitat	Marine
Preservation	Carbonization	Orig. Material?	NA	Relief	Positive and Negative Relief	Mineral Comp.	Shale

These two specimens are specifically of the pygidium of a trilobite, or in other words the tail of a trilobite. There are very distinct bumps on the tail and in this fossil, there is only one or two partially visible segments of what appears to be a thorax.