Ordovician and Silurian Organic Microfossils
描述: Early Palaeozoic tracheid-like tubes, believed to be of vascular land plant origin, resemble fragments of graptolite stolons.
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The Carboniferous rhabdopleurid graptolite closely resembling the extant species Rhabdopleura compacta Hincks.
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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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