30144 - Top Well Preserved 1.39 Inch Tsinania laebigate Cambrian Trilobite - China Brachylophosaurus ureilites tend to have a

ureilites tend to have a high percentage of carbon (average 3% by weight) in the form of graphite and nanodiamonds

The matrix is formed by very fine-grained plagioclase

Congosaurus

Line 0: State/Prov/County: Rio de Oro Date: 2016 Latitude: 24°4

Mimetaster hexagonalis and Marrella have long been regarded as closely related (Stürmer & Bergström 1976

30144 - Top Well Preserved 1.39 Inch Tsinania laebigate Cambrian Trilobite - China Brachylophosaurus ureilites tend to have aTsinania, Walcott 1914 (trilobite) Trilobita Corynexochida Tsinaniidae PaleoDB taxon number: 19709 Parent taxon: Tsinaniidae according to P. A. Jell and J. M. Adrain 2002 See also Sepkoski 2002 Sister taxa: Leiaspis, Shergoldia, Taipaikia, Zhujia Subtaxa: Tsinania canens View classification Ecology: nektobenthic carnivore Environments: carbonate (2 collections), (1), marine (1), slope (1), offshore shelf (1) Age range: 488. 3 to 478. 6 Ma