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Spiniferites ramosus ssp. primaevus
General Images Stratigraphy Description Literature Notes
Year Author Title
A palynostratigraphy of the Berriasian to Barremian of the Speeton Clay of Speeton, England
Morphology and systematics of the ceratiod group: A new morphographic approach. Revision and emendation of the genus Muderongia Cookson and Eisenack 1958

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