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Your search for “%22Triarthrus spinosus%22” gave approximately 3 results:
Image: Triarthrus spinosus
Image: Triarthrus spinosus
Image: Triarthrus spinosus & Triarthrus eatoni
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"When out fossil hunting, it is very easy to forget that rather than telling you how the creatures lived, the remains you find indicate only where they became fossilized.", Richard E. Leakey (1946)
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Black River-Trenton Brachiopoda Cheirocystis Cobourg Cooper Crinoids Echinoderms Fossils Gatineau Hull Isotelus Pelecypoda Triarthrus Triarthrus canadensis Triarthrus spinosus Trilobita abundantly analysis animal area billings formation billings shale canada cannot certain classes conclusion corals diagnostic divisions echinoderm fauna forms genera generalized generic identification interior limestone most north america number ontario ottawa poorly preserved pseudogygites pseudogygites latimarginatus reflected represented species specimens stromatoporoids structure themselves trilobite upon upoon usually valves
