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The main phases are olivine and orthopyroxene
Megagnostus
exhibiting a few broad regmaplypts
Precious tooth of Cretolamna aschersoni (Mackerel Shark) from the phosphate deposits of the Ouled Abdoun Basin (Morocco)
30787 - Nicely Preserved 1.22 Inch Cyphaspis (Otarion) cf. boutscharafinense Devonian Trilobite Perisphinctes The main phases are olivineOtarion, Zenker 1833 (trilobite) Trilobita Proetida Aulacopleuridae Synonyms: Conoparia Hawle and Corda 1847 (no. 155231), Otarionella Weyber 1965 (no. 21276) Parent taxon: Aulacopleuridae according to P. A. Jell and J. M. Adrain 2003 See also Jell and Adrain 2002, Sepkoski 2002, Thomas and Owens 1978 and Whittington 1941 Sister taxa: Aulacopleura, Aulacopleurinae, Coignouina, Cyphaspides, Dixiphopyge, Goodsiraspis, Maurotarion, Namuropyge,
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