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Lioharpes is a genus of harpetid trilobites known from Devonian marine deposits. Like other members of its group, it had a broad cephalic brim marked by numerous small pits or perforations, while the central portion of the head was comparatively smooth. The biological function of the brim remains in...
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Ordovician asaphid trilobite from Laurentia, named in honor of Canadian geologist Sir William Edmond Logan and known from North American Ordovician deposits.
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