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Graptolites (Graptolithina) + pterobranchs (Pterobranchia) = hemichordate class Graptolithoidea.
描述: Links to graptolite and pterobranch pages, abstracts, articles, graptolite researchers.
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The Carboniferous rhabdopleurid graptolite closely resembling the extant species Rhabdopleura compacta Hincks.
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Describes the discovery, in 1903 by Clifton Sarle, of a new eurypterid fauna (fossil arthropods) and contains illustration of the two common forms: Hughmilleria and ...
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Scientific explanation of the formation of the mountain.
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Diagnosis, occurrence, images and references of the Jurassic species.
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This species, a probable extant graptolite (according to some researchers), is regarded as a living fossil.
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Yale University comprises three major academic components: Yale College (the undergraduate program), the Graduate School of Arts and Sciences, and the professional ...
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Independent, low-budget, Mountain Dew-drinking, computer game playing, movie-watching and sometimes movie-making studio in Smokey Point WA.
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Located in Lexington. The state's only comprehensive, land-grant research university.
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