30581 - Top Quality 3.25 Inch Calymenella sp Ordovician Trilobite Ktaoua Formation Orthoclase (Feldspar) It has some glued and

It has some glued and tiny filled fractures

low-ca pyroxene

This particular example has been nicely prepared to remove the hard rock and expose the shell

†Olenoides

Bulk composition (G

30581 - Top Quality 3.25 Inch Calymenella sp Ordovician Trilobite Ktaoua Formation Orthoclase (Feldspar) It has some glued andCalymenella, Bergeron 1890 (trilobite) Trilobita Phacopida Calymenidae Ecology: nektobenthic carnivore Environments: marine, shoreface, offshore, transition zone lower shoreface, coastal , carbonate, offshore, submarine fan, marginal marine, shallow subtidal, deep subtidal shelf, offshore shelf Age range: 488. 3 to 428. 2 Ma Distribution: Silurian of United States Ordovician of Argentina, the Czech Republic, France, Morocco, Portugal, Spain, Turkey