20052 - Top Well Prepared "Flying" 3.23 Inch Crotalocephalina gibbus Lower Devonian Trilobite Pterosaur claws Donald (1986): Halisaurus and Prognathodon

Donald (1986): Halisaurus and Prognathodon

these types of fossils are astounding

and three to five in O

with discrete apical carinae

20052 - Top Well Prepared "Flying" 3.23 Inch Crotalocephalina gibbus Lower Devonian Trilobite Pterosaur claws Donald (1986): Halisaurus and PrognathodonImpressive specimen, prepared in an exceptional way. This trilobite has been prepared as free standing. This type of preparation requires meticulous work of tens of hours. Of course, some of the free standing sectors during the preparation process have been fractured and glued again, with slight restorations in the fracture zones. A preparation like this without small restorations is impossible. However, in this specimen the restoration is minimal.