Eubostrychoceras

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"Eubostrychoceras is a genus of helically wound, corkscrew form, heteromorph ammonite which lived during the Upper Cretaceous (M Turonian - Campanian). The genus is included in the ancycleratid family Nostoceratidae.

The shell of Eubostrychoceras is a loosely to tightly wound spiral forming a corkscrew with an open, empty umbilicus in the middle. coiling is commonly dextral (right hand). Coils are covered by moderately strong, straight transverse ribs. The aperture, or apertural end, reverses general direction and points upwards or back towards to apex. Sutures are moderately complex. The siphuncle is located mid flank." - (en.wikipedia.org 18.12.2020)
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  • Eubostrychoceras saxonicum

    Eubostrychoceras saxonicum

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    Image: Naturkunde-Museum Bielefeld (namu) - CC BY-NC-SA

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