30377 - Rare 0.91 Inch Cordania wessmani Lower Devonian Trilobite - Oklahoma USA Palaeoperca Igneous Rocks: A Classification and

Igneous Rocks: A Classification and Glossary of Terms: Recommendations of the International Union of Geological Sciences Subcommission on the Systematics of Igneous Rocks

The Cobaltoan calcite is a variety of calcite containing Co2+ replacing Ca

Fe/Mn=50-55)

Fell: 18 July 2011

30377 - Rare 0.91 Inch Cordania wessmani Lower Devonian Trilobite - Oklahoma USA Palaeoperca Igneous Rocks: A Classification andCordania, Clarke 1892 (trilobite) Trilobita Brachymetopidae PaleoDB taxon number: 21127 Parent taxon: Brachymetopidae according to J. M. Adrain and G. J. Kloc 1997 See also Owens and Hammann 1990 and Sepkoski 2002 Sister taxa: Australosutura, Brachymetopinae, Cheiropyge, Hahnus, Latecephalus, Mystrocephala, Narinia, Scharyiinae Subtaxa: none Ecology: fast moving low level epifaunal deposit feeder Environments: marine (2 collections), deep subtidal