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Eoagnostus
''Eoagnostus'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the terminal Lower Cambrian (Toyonian), until the earliest Middle Cambrian (earliest ''Kounamkites''-zone, part of the lower Amgaian).〔 == Distribution ==
* ''E. roddyi'' terminal Lower Cambrian of the United States (''Bonnia''-zone, Kinzers Shale, Lancaster, New York; Pennsylvania; Vermont)〔Whittington, H. B. et al. Part O, Treatise on Invertebrate Paleontology. Revised, Volume 1 – Trilobita – Introduction, Order Agnostida, Order Redlichiida. 1997〕 and the early Middle Cambrian of Newfoundland, and Greenland (around the boundary of ''Ovatoryctocara''-zone, Henson Gletscher Formation).〔 * ''E. acrorhachis'' occurs in the terminal Lower Cambrian of the United States (''Bonnia''-zone, Hatch Hill, New York).〔
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