F108 – Richard D. Little Geology Collection

Sample ID F108 • Cabinet M

Cryptolithus bellulus

6.87cm W x 1.72cm H x 6.18cm D • 64g

Sample Type	Fossil	Fossil Type	Altered hard parts		Mohs Hardness		4
Domain	Eukaryota	Kingdom	Animalia	Phylum	Arthropoda	Class	Trilobita
Order	Asaphida	Family	Trinucleidae	Genus	Cryptolithus	Species	bellulus
Distribution/Period		North America, Ordovician Period			Habitat	Marine
Preservation	Cast	Orig. Material?	NA	Relief	Positive Relief	Mineral Comp.	Potentially a limestone cast.

Very small specimen in a chunk of what could be limestone. Very prominent cast of the specimen that doesn't have any visible spines. Very large head shield compared to size of the thorax, the thorax is very short. There's a prominent band around the front of the head shield. No visible spines on this particular specimen.