22056 - Superb Bug Eyed 2.52 Inch Coltraneia effelesa Middle Devonian Orthoclase (Feldspar) Some of them have glued

Some of them have glued or filled fractures

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The front and back has been cut and polished to a high gloss finish

As it corresponds with the family Aulacopleuridae

Tissint Mars Rock has a very fresh shiny black fusion crust with a greyish interior color containing sporatic areas of black glass and pale yellow olivine macrocrysts

22056 - Superb Bug Eyed 2.52 Inch Coltraneia effelesa Middle Devonian Orthoclase (Feldspar) Some of them have gluedNicely well preserved and prepared specimen. Nice eyes facets. Coltraneia sp, Lieberman and Kloc 1997 (trilobite) Trilobita Phacopida Acastidae Full reference: B. S. Lieberman and G. J. Kloc. 1997. Evolutionary and biogeographic patterns in the Asteropyginae (Trilobita, Devonian) Delo, 1935. Bulletin of the American Museum of Natural History 232: 1 127 Parent taxon: Acastidae according to B. S. Lieberman and G. J Kloc 1997 Sister taxa: Acastava,