Lu and Zhu 1983 (trilobite)
composed of white and gray angular clasts set in a dark-gray matrix
It has some tiny glued and filled fractures
although it most commonly occurs in oxidized states and mixed with other elements
Impressive and rare authentic example of unidentified theropod dinosaur vertebra bone
30862 - Top Beautiful 1.85 Inch Harpes perradiatus Lower Devonian Trilobite Ammonites Lu and Zhu 1983 (trilobite)Harpes perradiatus, Richter and Richter 1943 Harpes Harpetidae PaleoDB taxon number: 313570 Alternative combination: Helioharpes perradiatus Belongs to Harpes according to M. C. Ebach and K. J. McNamara 2002 Sister taxa: Harpes acuminatus, Harpes dvorcensis, Harpes escoti, Harpes fornicatus, Harpes forojuliensis, Harpes gracilis, Harpes koeneni, Harpes latilimbatus, Harpes macrocephallus, Harpes macrocephalus, Harpes neogracilis, Harpes nymageenensis,