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Reference
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| Title: |
Report on Referred Fossils
,
1980
(08/21)
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Both collections in this shipment are of post-Permian age. The collection with the large amount of coralline material (80ADt173) is Upper Triassic, perhaps Norian. The yellow-weathering calcareous sandstone (80ADt175) is probably Lower Jurassic.
George Stanley is examining the corals and will give additional details later. I am turning the other collection over to Ralph Imlay who will report on it together with the other Jurassic collections which you are shipping him.
This report confirms our telephone conversation of 8/20/80. |
| Report by: |
J. Thomas Dutro
, Jr.
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| Referred by: |
Robert L. Detterman
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| | Age: | Norian (perhaps Norian) |
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| Comment: | Collection contains a large number of scleractinian corals, some with branching colonies; small, ball-like hydrozoans (?); a monotid clm; rhynchonellid brachiopod; large high-spired snail. Detailed identifications later. |
| Occurrence(s) |
| No. |
Group |
|
Name |
Qty |
Notes |
| 1 |
Scleractinian Corals |
|
large number of scleractinian corals |
|
some with branching colonies |
| 2 |
Hydrozoans |
|
small, ball-like hydrozoans (?) |
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| 3 |
Bivalves |
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monotid clam |
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| 4 |
Brachiopods |
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rhynchonelloid brachiopod |
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| 5 |
Snails |
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large, high-spired snail |
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| Title: |
Report on Referred Fossils
,
1980
(08/29)
|
|
|
| Report by: |
George D. Stanley
, Jr.
|
| Referred by: |
Robert L. Detterman
|
|
|
|
| | Age: | Norian |
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| Comment: | Collection 80ADt173 consists of a variety of fossils in impure limestone from Cape Kekurnoi, Alaska. The following identifications were made: (see faunal list)
This assemblage is most certainly Triassic. The presence of spongiomorph hydrozoans, the coral Elystastraea whiteavesi, and associated fossils suggest a Late Triassic age similar to other coelenterate faunas of western North America (Stanley, 1979; Univ. Kansas Paleo. Contrib. Art. 65). The corals are conspecific with those described from the late Norian of Vancouver Island by Clapp and Shimer 1911, and Smith (1927). This species is unusual in its tendency to produce branches rather than sheetlike growth forms.
The assemblage as a whole indicates a Late Triassic age and presence of Monotis cf. M. subcircularis, as questionable identified from one fragment of a shell, indicates a Norian age.
Unfortunately, many of the fossils are too poorly preserved for positive identification. Processing for silicified material may yield more useful material. |
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