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Geological Time: Jurassic
holotype
View of a specimen of Spirillina oolithica (Schwager, 1867)
The identification is based upon:
, : Schwager, C. in Waagen, V. (1867). Über die Zone des Ammonites Sowerbyi. Geognostische-paläontologische Beiträge. 511-665. Plate , Fig.
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