F104 – Richard D. Little Geology Collection

Sample ID F104 • Cabinet M

Tricrepicephalus

5.83cm W x 1.37cm H x 9.07cm D • 66g

Sample Type	Fossil	Fossil Type	Altered hard parts		Mohs Hardness		4
Domain	Eukaryota	Kingdom	Animalia	Phylum	Arthropoda	Class	Trilobita
Order	Ptychopariida	Family	Tricrepicephalidae	Genus	Tricrepicephalus	Species	NA
Distribution/Period		North America, Upper Cambrian			Habitat	Marine
Preservation	Cast	Orig. Material?	NA	Relief	Positive relief	Mineral Comp.	Most likely limestone but has been altered.

Navy blue specimen that has very prominent features. The head shield has two backward facing spines. Along the back there is a visible spine and there are twelve visible segments within the thorax. There are two rounded spines off the tail as well.