Reference
|
Title: |
Report on Referred Fossils
,
1979
(08/31)
|
|
The fossils from locality 79ADt-129 are definitely of late early or middle Callovian age as shown by the presence of Pseudocadoceras and Cadoceras. The same age is suggested for locality 79ADt-128 as shown by the presence of a fragment resembling Pseudocadoceras. A late middle Oxfordian to late Kimmeridgian age is shown by the presence of Buchia concentrica (Sowerby) at localities 79ADt-85, 79ACe-64 and 79ACe-73B. The presence of Buchia sp. at locality 79ACe-48A shows that the associated Phylloceras (Partschiceras) is not older than late middle Oxfordian. The specimen of Phylloceras (Partschiceras) at locality 79ACe-75 is identical with a species in the Naknek Formation that I am describing in an unpublished paper on Upper Jurassic ammonites from Alaska. |
Report by: |
Ralph W. Imlay
|
Referred by: |
Robert L. Detterman
|
|
|
| Age: | Oxfordian-Kimmeridgian (late middle Oxfordian - late Kimmeridgian) |
Formation: | Naknek Formation |
|
|
|
|
|
Comment: | A late middle Oxfordian to late Kimmeridgian age is shown by the presence of Buchia concentrica (Sowerby) at localities 79ADt085, 79ACe-64 and 79ACe-73B. |
|