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Title: Plantae & Pteridophyta & Sphenopsida, Plantae Pteridophyta Sphenopsida [Go to resource]
Description: Specimen of a fossil Plant (Horsetail), Calamites sp., collected from the Ravenscar Group (?) of Middle (?) Jurassic, Aalenian - Bathonian age. Internal cast of stem, 30 mm diameter, in sandstone. Stratigraphy: Jurassic (Middle ?) & Aalenian - Bathonian / 160 - 178 my (?) Source: Tyne & Wear Archives & Museums Identifier: emu.ecatalogue.palaeobiology.3827 Go to resource More Like this...
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