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- Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate
The complicated sedimentarian architecture of the layers where most large vertebrates are found makes the excavation methodology a real challenge
Brachyaspis
Niobella lindstroemi
30718 - Partial Prepared 0.93 Inch Spiny Koneprusia dahmani Lower Devonian Trilobite Trinucleus fimbriatus - Gypsum is a softKoneprusia sp, Prantl and Pribyl 1949 (trilobite) Trilobita Lichida Odontopleuridae PaleoDB taxon number: 358926 Full reference: B. D. Chatterton, R. A. Fortey, K. D. Brett, S. L. Gibb, and R. C. McKellar. 2006. Trilobites from the upper Lower to Middle Devonian Timrhanrhart Formation, Jbel Gara el Zguilma, southern Morocco. Palaeontolographica Canadiana (25)1 177 Belongs to Koneprusia according to B. D. Chatterton et al. 2006 Sister taxa: Koneprusia
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