30372 - Top Rare 0.91 Inch Wujiajiania southerlandi Upper Cambrian Trilobite - Canada Vanadinite Helioproetus

Helioproetus

due to their distinctively bumpy surface and pronounced ridges making them resemble a tractor tire

Alberti 1969 (trilobite)

Fe-Ti oxides are common in the matrix (Fig

Emu Bay Shale

30372 - Top Rare 0.91 Inch Wujiajiania southerlandi Upper Cambrian Trilobite - Canada Vanadinite HelioproetusWujiajiania, Lu and Lin 1980 (trilobite) Trilobita Olenidae PaleoDB taxon number: 21044 Parent taxon: Olenidae according to P. A. Jell and J. M. Adrain 2002 See also Sepkoski 2002 Sister taxa: Acerocare, Acerocarina, Aciculolenus, Angelina, Apoplanias, Balnibarbiinae, Beltella, Boeckaspis, Chekiangaspis, Ctenopyge, Euonchonotina, Hancrania, Highgatella, Huangshiaspis, Hypermecaspidinae, Hypermecaspis, Inkouia, Jujuyaspis, Leiobienvillia, Leptobenthos,