30728 - Top Quality 3.48 Inch Crotalocephalina (Crotalocephalus) gibbus Lower Devonian Trilobite Concavotectum pyroxenes and the altered olivines

pyroxenes and the altered olivines represent

It belongs to the Upper Cretaceous

Under binocular loupes you can even see the wing details

• Silurian of Australia

30728 - Top Quality 3.48 Inch Crotalocephalina (Crotalocephalus) gibbus Lower Devonian Trilobite Concavotectum pyroxenes and the altered olivinesCrotalocephalina sp, Pibyl and Vanek 1964 (trilobite) Trilobita Phacopida Cheiruridae Parent taxon: Cheiruridae according to P. A. Jell and J. M. Adrain 2002 See also Sepkoski 2002 Sister taxa: Acanthoparyphinae, Anasobella, Ancyginaspis, Arcticeraurinella, Areia, Areiaspis, Borealaspis, Bornholmaspis, Ceraurinium, Ceraurinus, Cerauroides, Cerauromeros, Cerauropeltis, Ceraurus, Chacomurus, Cheirurinae, Cheirurus, Chiozoon, Contracheirurus,