21257 - Great Collection of 15 Coltraneia effelesa Middle Devonian Trilobites Agate also known as K-feldspar

also known as K-feldspar

This is 1 of 51 approved meteorites classified as L3-6

Merocycloceras

In the matrix

And its morphology resembles the Harpides genus of the lower Ordovician of other Formations such as Fezouata

21257 - Great Collection of 15 Coltraneia effelesa Middle Devonian Trilobites Agate also known as K-feldsparGreat collection of 15 nicely well preserved and prepared specimens. 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