30807 - Nicely Preserved 0.79 Inch Onnia sp Ordovician Trilobite Prionocheilus Beautiful example of Fully Complete

Beautiful example of Fully Complete Oriented NWA 8725 Carbonaceous Chondrite CR2

United States (4: Massachusetts

Impressive almost complete specimen with a very well developed fusion crust

Mergl 1984 (trilobite)

where the organic matter has difficulty decomposing

30807 - Nicely Preserved 0.79 Inch Onnia sp Ordovician Trilobite Prionocheilus Beautiful example of Fully CompleteOnnia sp, Bancroft 1933 (trilobite) Trilobita Asaphida Trinucleidae Parent taxon: Trinucleidae according to P. A. Jell and J. M. Adrain 2002 See also Sepkoski 2002 Ecology: fast moving low level epifaunal suspension feeder Age range: 460. 9 to 443. 7 Ma