30406 - Rare 2.02 Inch Nevadia weeksi Lower Cambrian Trilobite - Nevada USA Agoudal and for that reason it

and for that reason it lacks a section

Nice specimen of this rare species of Lichid trilobite

(ammonite)

It has small filled sector inside one of the fractures

Proetus alaricus

30406 - Rare 2.02 Inch Nevadia weeksi Lower Cambrian Trilobite - Nevada USA Agoudal and for that reason itNevadia, Walcott 1910 (trilobite) Trilobita Redlichiida Nevadiidae PaleoDB taxon number: 19147 Full reference: C. D. Walcott. 1910. Cambrian geology and paleontology. No. 6 Olenellus and other genera of the Mesonacid. Smithsonian Miscellaneous Collections 53(6): 231 422 Parent taxon: Nevadiidae according to B. S. Lieberman 1998 See also Fritz 1995, Lieberman 2001, Palmer and Repina 1993, Sepkoski 2002, Walcott 1910 and Whittington et al. 1997 Sister