Urasterella asperula
Urasterella asperula Stürtz 1893
Lower Devonian
Emsian
Bundenbach
Hunsrück
Germany
Length 6cm / 2 inch
By oilshale
Urasterella asperula Stürtz 1893
Lower Devonian
Emsian
Bundenbach
Hunsrück
Germany
Length 6cm / 2 inch
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