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Keywords from Image Description:
CATALOGUEBMPLATE CIII. en PLATE CIII Graptolitha vertina Vol VI Br Columbia Lithophane georgii Grt vertina Sm ancilla Manitoba Lithophane georgii Grt ancilla Sm holocinerea Br Columbia Lithophane georgii Grt holocinerea Sm fletcheri Canada Lithophane georgii Grt fletcheri Sm georgi Canada Lithophane georgii Grt emarginata