30453 - Well Preserved 0.69 Inch Pseudocybele lemurei Ordovician Trilobite - Utah, USA Prionolepis cataphractus the reabsorption of the olivines

the reabsorption of the olivines and the pyroxenes overgrowth indicate a complex evolution of the magma

Tajikistan

Cerauropeltis

Oryctocephalids (Corynexochida: Trilobita) of the Lower-Middle Cambrian boundary interval from California and Nevada

Ptychagnostus

30453 - Well Preserved 0.69 Inch Pseudocybele lemurei Ordovician Trilobite - Utah, USA Prionolepis cataphractus the reabsorption of the olivinesPseudocybele lemurei, Hintze 1952 (trilobite) Trilobita Phacopida Pliomeridae PaleoDB taxon number: 177257 Full reference: L. F. Hintze. 1952. Lower Ordovician trilobites from western Utah and eastern Nevadea. Utah Geological and Mineralogical Survey Bulletin 48: 249 p. Belongs to Pseudocybele according to L. F. Hintze 1952 Sister taxa: Pseudocybele altinasuta, Pseudocybele nasuta Type specimen: 26461 (AMNH), a cephalon head (cranidium) Ecology: fast