Reference
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Title: |
Report on Referred Fossils
,
1981
(05/21)
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Report by: |
John Pojeta
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Referred by: |
William P. Brosge
,
J. Thomas Dutro
, Jr.
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| Age: | Devonian (Devonian?) |
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Comment: | the fossils in this collection are poorly preserved and there are no diagnostic forms. My general impression is that a Devonian age might be indicated. The collection contains: 1) large modiomorphids, some of which have an umbonal keel like Goniophora; however, the keeling may be preservational and not original. Large Goniophoras are most common in Devonian rocks, but the total range of this genus is Ordovician-Lower Permian. The non-keeled modiomorphids have a shape similar to the Ordovician genus Modiolopsis and the Devonian genus Modiomorpha. These genera differ in dentition, a feature not preserved on these specimens. 2.) An indeterminate myophorid, and 3) large probable pholadomyaceans which are wide like post-Ordovician forms. This combination of shapes suggests a possible Devonian age, although additional material could readily change this pick, or reenforce it. The rock does contain carbonate and could be prepared for conodonts. |
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