Spirifer sp. (Sowerby 1818)
17mm. across. With Eldredgeops rana and Amplexiphyllum hamiltoniae. From Penn Dixie, Hamburg, NY. Smoke Creek Trilobite Bed, Windom Shale Member, Moscow Formation, Givet, Middle Devon.
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By Ludwigia
17mm. across. With Eldredgeops rana and Amplexiphyllum hamiltoniae. From Penn Dixie, Hamburg, NY. Smoke Creek Trilobite Bed, Windom Shale Member, Moscow Formation, Givet, Middle Devon.
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