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Reference
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| Title: |
Report on Referred Fossils
,
1992
(11/15)
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| Report by: |
Robert B. Blodgett
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| Referred by: |
Jeanine Schmidt
,
Julie A. Dumoulin
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| | Age: | Mississippian |
| Formation: | Kayak Shale; Kuna Formation (Kayak Shale or Kuna Formation) |
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| Comment: | Small mollusk-bearing concretions; ammonoids common; nautiloids, gastropods, and pelecypods rare. Angyomphalus (Angyomphalus) sp. is represented by four specimens, two of which represent the upper shell surface, the remaining two representing the basal whorl surface of the final whorl. The shells are rather well preserved, and if we had additional specimens bearing the shell periphery, it would be very feasible to make an adequate species level comparison. This subgenus ranges from the Givetian (late Middle Devonian) to the Lower Carboniferous (Blodgett & Johnson, 1992, p. 104), hence it is compatible with the Mississippian age of these stratigraphic horizons. The indeterminate gastropod is represented by a single whorl fragment bearing a lovely cancellate sculpture of intersecting radial and collabral lirae. Unfortunately, it could be a representative of any number of gastropod taxa representing differing higher taxic levels. No paleoecologic interpretation can be made on the basis of this small collection.
I am very impressed by the quality of shell preservation, and if more material was available, it could well be worth a descriptive taxonomic paper in the right hands!
Reference: Blodgett, R.B. & Johnson, J.G., 1992, Early Middle Devonian (Eifelian) gastropods of central Nevada: Palaeontographica Abt. A, v. 222, p. 85-139. |
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| Title: |
Report on Referred Fossils
,
1992
(09/23)
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| Report by: |
John Pojeta
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| Referred by: |
Jeanine Schmidt
,
Julie A. Dumoulin
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| | Age: | Early Ordovician-Permian |
| Formation: | Kayak Shale; Kuna Formation (Kayak Shale or Kuna Formation) |
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| Comment: | This report concerns 1 sample from field locality number 91JS38L. Small mollusk-bearing concretions; ammonoids and gastropods common; nautiloids and pelecypods rare.
A disarticulated valve of a nuculoid pelecypod having the shape of a complex of genera that range from the lower Ordovician to somewhere in the Permian. This valves does not preserve the features needed to classify the specimen below order. This specimen indicates a post-Cambrian Paleozoic age. Sorry, hope the other shells that Robert Blodgett is examining are more useful. The specimen is being returned. Nuculoids are deposit feeding shallow infauna; however, the disarticulation indicates that the specimen has been transported. |
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