30181 - Top Beautiful 1.05 Inch Modocia weeksensis Upper Cambrian Trilobite Utah USA Chelonioids Oxygen isotopes (R

Oxygen isotopes (R

Extremely beautiful natural association

69 Inch   //   43

Size of the tooth: 51 mm (2

5 mm) and microphenocrysts (to 0

30181 - Top Beautiful 1.05 Inch Modocia weeksensis Upper Cambrian Trilobite Utah USA Chelonioids Oxygen isotopes (RModocia, Walcott 1924 (trilobite) Trilobita Marjumiidae PaleoDB taxon number: 20728 Parent taxon: Marjumiidae according to P. A. Jell and J. M. Adrain 2002 See also Resser 1936 and Sepkoski 2002 Sister taxa: Armonia, Coosellidae, Holmdalia, Ithyektyphus, Marjumia, Nasocephalus, Nericella, Nericia, Pearylandia, Shickshockia, Syspacheilus Subtaxa: Modocia integella, Modocia obscura, Modocia oweni, Modocia penfieldi View classification Type: Arionellus