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Showing 1 - 20 results of 43 for search '"Middle Ordovician"', query time: 1.08s Refine Results
  1. 1
    “...Two occurrences of Middle Ordovician opercula belonging to the gastropod Maclurites are described...”
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    Article in Journal/Newspaper
  2. 2
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  3. 3
    “...Upper Cambrian to Middle Ordovician mafic volcanic rocks of the Donjek assemblage comprise...”
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  4. 4
    “...The Middle Ordovician Pseudoclimacograptus decoratus Zone (Llanvirn) and Climacograptus bicornis...”
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  5. 5
    by Potter, A. W.
    Published in Journal of Paleontology (1990)
    “... of northern California. In middle Ordovician deposits the genus is widespread and ranges from Nevada...”
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  6. 6
    “...-Jurassic assemblages on Annette, Gravina, Duke, and adjacent smaller islands include pre-Middle Ordovician...”
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  7. 7
    “... and Silurian rocks. A widespread intraplatform basin of Early and Middle Ordovician age in northern Alaska has...”
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    Text
  8. 8
    “...-Jurassic assemblages on Annette, Gravina, Duke, and adjacent smaller islands include pre-Middle Ordovician...”
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  9. 9
    by Gehrels, George Ellery
    Published 1986
    “... ages in the 475-425 Ma (Middle Ordovician-Early Silurian) range and are probably overlain by Lower...”
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    Other/Unknown Material
  10. 10
    by Gehrels, George Ellery
    Published 1986
    “... ages in the 475-425 Ma (Middle Ordovician-Early Silurian) range and are probably overlain by Lower...”
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    Other/Unknown Material
  11. 11
    “...-Jurassic assemblages on Annette, Gravina, Duke, and adjacent smaller islands include pre-Middle Ordovician...”
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    Article in Journal/Newspaper
  12. 12
    by Johnson, Benjamin G.
    Published 2019
    “... places a Cambrian–Middle Ordovician structural complex of basalt, limestone and chert, herein named...”
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  13. 13
    by Gehrels, George Ellery
    Published 1986
    “... ages in the 475-425 Ma (Middle Ordovician-Early Silurian) range and are probably overlain by Lower...”
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    Thesis
  14. 14
    by Gehrels, George Ellery
    Published 1986
    “... ages in the 475-425 Ma (Middle Ordovician-Early Silurian) range and are probably overlain by Lower...”
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    Still Image
  15. 15
    by Gehrels, George Ellery
    Published 1986
    “... ages in the 475-425 Ma (Middle Ordovician-Early Silurian) range and are probably overlain by Lower...”
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    Still Image
  16. 16
    by Gehrels, George Ellery
    Published 1986
    “... ages in the 475-425 Ma (Middle Ordovician-Early Silurian) range and are probably overlain by Lower...”
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    Thesis
  17. 17
    by Occdownload Gbif.Org
    Published 2021
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    Dataset
  18. 18
    by Occdownload Gbif.Org
    Published 2022
    “... Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian...”
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    Dataset
  19. 19
    by Occdownload Gbif.Org
    Published 2021
    “... records from Middle Ordovician Drepanoistodus (Vertebrata, Conodonta) from Baltica, with description...”
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    Dataset
  20. 20
    by Occdownload Gbif.Org
    Published 2021
    “... national d'Histoire naturelle (MNHN - Paris). 3 records from Middle Ordovician Drepanoistodus (Vertebrata...”
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    Dataset
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