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Toragnostus
''Toragnostus'' is a genus of trilobites restricted to the late Middle Cambrian. Its remains have been found in the United States, Greenland, Denmark, China, Sweden, the Russian Federation, and Kazakhstan. Its headshield and tailshield are almost completely effaced and it has two thorax segments. == Distribution ==
* ''T. bituberculatus'' occurs in the late Middle Cambrian of the United States (Hillard Peak area, Alaska)〔 Greenland (''Lejopyge laevigata''-zone, Holm Dal Formation, West Peary-land), Denmark, China (Hunan), Sweden (''Jincella brachymetopa''-zone, Andrarum, Skåne), the Russian Federation (''C. oriens'' and ''A. henrici''-zones, Siberian Platform, and Bennett Island), and Kazakhstan (Mayan, Tian Shan Range).〔Whittington, H. B. et al. Part O, Treatise on Invertebrate Paleontology. Revised, Volume 1 – Trilobita – Introduction, Order Agnostida, Order Redlichiida. 1997〕
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