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Helmut Krock

Helmut Krock


Samples from Helmut Krock's collection:

Ceratosiphon cf. bicarinata (Deshayes in Leymerie, 1842); Hauterivian?, Barremian?, lower Cretaceous; Ziegelei Moorberg, Sarstedt, Lower Saxony State, Germany; Coll. Helmut Krock

Ceratosiphon cf. bicarinata (Deshayes in Leymerie, 1842); Hauterivian?, Barremian?, lower Cretaceous; Ziegelei Moorberg, Sarstedt, Lower Saxony State, Germany; Coll. Helmut Krock

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