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Reference
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| Title: |
Report on Referred Fossils
,
1959
(09/30)
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| Report by: |
Helen Duncan
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| Referred by: |
E. H. Lathram
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| | Age: | Permian (Probably Permian) |
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| Comment: | The small sample is a very siliceous rock that contains crinoid columnals, a little bryozoan debris, a punctate spiriferoid brachiopod (found in a random section), and fragmentary horn corals. A section through one of the fragments shows a coral with an extremely complex axial structure; and the other fragment, which probably came from the same type of coral, shows an elaborate disseptamentarium. These features suggest relationships with corals in the waagenophyllid group, possibly Iranophyllum, although the fragmentary nature of the material precludes certain identification. Axial structures of such complexity are not known in Devonian or older corals, so the possibility of a Silurian or Devonian age for the beds represented is most unlikely. From what is known about the occurrence of comparable corals in Alaska and the Northwest, the chances are that the rock is Permian. With so little to go on, however, I cannot positively rule out the possibility of Carboniferous age. |
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