Report on Referred Fossils |
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| Stratigraphic range: |
Upper and Middle? Triassic |
| Kinds of fossils: |
Marine invertebrates |
| Quadrangle or area: |
not given, Northern Alaska |
| Shipment No.: |
O-61-8M |
| Referred by: |
BP Exploration Co., Inc.
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| Report prepared by: |
Silberling, Norman J.
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| Date: |
11/13/1961 |
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This shipment includes 43 collections, the locality numbers for which are prefixed by the letter designation "AC". Of these collections, AC 3, AC 13, AC 20, AC 34, AC 37, AC 1082, AC 2112, AC 6002, and probably AC 54 and AC 6001 can be dated as late Karnian or early Norian (medial Late Triassic). Collections AC 1131, AC 1163, AC 2113, and probably AC 33, AC 35, AC 51, AC 1165, AC 3007, and AC 5004 are of middle or late Norian (late Late Triassic) age. Collections AC 29, AC 36, AC 50, AC 1079, AC 1081, AC 1117, AC 1130, AC 2010, and AC 3006 can be dated only as Late Triassic. Collection AC 39 deserves special mention because the pelecypods present are best assigned to the genus Daonella which is largely confined to the Middle Triassic. Five upper Paleozoic collections, AC 1057, AC 2093, AC 2120, AC 2129, and AC 6000, were included in this shipment and are being forwarded to J.T. Dutro, Jr. for study. The collections whose locality numbers are underlined in the following tabulation will be added to the USGS reference collections. Locality data for the collections so marked will be appreciated at your earliest convenience.
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| User Note module to be added |
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AC 3
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Halobia cf. H. zitteli Lindstrom
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AC 13
(Mesozoic loc. M1408)
, Demarcation Point
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1408. Northern Alaska, Demarcation Point quad., 1:250,000. Latitude 69 degrees 13'30" N., long. 143 degrees 02'40" W. From middle part of Triassic. Collector: BP Exploration Co., 1961. Field No: AC 13.
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Halobia cf. H. zitteli Lindstrom
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Indet. pectenid and heterodont pelecypods
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AC 20
(Mesozoic loc. M1391)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1391. Northern Alaska, Mt Michelson quad., 1:250,000. Lat 69 degrees 31' N, long. 144 degrees 15' W. From lower part of Triassic. Collector: BP Exploration Co., 1961. Field No. AC 20.
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Hoplotropites cf. H. moffiti (Smith)
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Indet. heterodont pelecypod
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AC 29
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 33
(Mesozoic loc. M1392)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1392. Northern Alaska, Mt. Michelson quad., 1:250,000. Lat 69 degrees 26'50" N, long. 145 degrees, 46'40" W. From middle part of Triassic. Collector: BP Exploration Co., 1961. Field No: AC 33.
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Gryphaea cf. G. arcuataeformis Kiparisova
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Spiriferina cf. S. griesbachi Bittner
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... and heterodont pelecypods, ....
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.... and rhynchonellid brachiopods
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AC 34
(Mesozoic loc. M1393)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1393. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 26'49" N, longitude 145 degrees 47' W. From middle part of Triassic. Collector: BP Exploration Co., 1961. Field No: AC 34.
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Halobia cf. H. zitteli Lindstrom
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Atractites-like belemnite
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AC 35
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 36
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Indet. rhynchonelloid brachiopod
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AC 37
(Mesozoic loc. M1394)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1394. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 26'30" N, longitude 145 degrees 47'50" W. From middle part of Triassic. Collector: BP Exploration Co., 1961. Field No. AC 37.
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Halobia cf. H. zitteli Lindstrom
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Dielasma cf. D. chapini Smith
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AC 39
(Mesozoic loc. M1395)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1395. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 24'48"N, longitude 145 degrees 47' W. From lower(?) part of Triassic. Collector: BP Exploration Co., 1961. Field No: AC 39.
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Daonella aff. D. frami Kittl (as recently described by Tozer (1961))
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AC 50
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 51
(Mesozoic loc. M1396)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1396. Northern Alaska. Mt. Michelson quad., 1:250,000. Latitude 69 degrees 32' N, longitude 145 degrees 16' W. 280 feet below top part of Triassic (330' thick). Collector: BP Exploration Co., 1961. Field No: AC 51.
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Spiriferina cf. S. griesbachi Bittner
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...... and heterodont pelecypod
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AC 54
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Halobia cf. H. zitteli Lindstrom
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AC 1061
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 1063
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 1077
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Fragmentary impression of ammonite(?) ribbing
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AC 1078
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Fragmentary impression of ammonite(?) ribbing
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AC 1079
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Halobia sp. indet. but with ribbing more like that of Karnian than of Norian species
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AC 1081
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 1082
(Mesozoic loc. M1397)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1397. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 25'18" N, longitude 144 degrees 09'15" W. Collector: BP Exploration Co., 1961. Field No: AC 1082.
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Sirenites? cf. S.? hayesi Smith
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Indet. rhynchonelloid brachiopods .......
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...... and heteropod pelecypods
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AC 1085
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 1098
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 1117
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 1130
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Indet. rhynchonellid brachiopod
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AC 1131
(Mesozoic loc. M1398)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1398. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 35' N, longitude 145 degrees 25' W. 40 feet below top part Triassic (270' thick). Collector: BP Exploration Co., 1961. Field No: AC 1131.
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Monotis ochotica (Keyserling)
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Indet. pectenid pelecypod
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AC 1156
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Indet. pelecypod in brown sandstone with chert pebbles
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AC 1162
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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AC 1163
(Mesozoic loc. M1399)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1399. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 14'12" N, longitude 146 degrees 30'30" W. From middle part of Triassic. Collector: BP Exploration Co., 1961. Field No: AC 1163.
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Monotis ochotica (Keyserling)
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Gryphaea cf. G. arcuataeformis Kiparisova
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AC 1165
(Mesozoic loc. M1400)
, Mt Michelson
, M1400. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 14' N, longitude 146 degrees 33' W. From basal part of Triassic. Collector: BP Exploration Co., 1961. Field No: AC 1165.
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Gryphaea cf. G. arcuataeformis Kiparisova
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.... and rhynchonelloid brachiopod
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AC 2010
(Mesozoic loc. M1409)
, Demarcation Point
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1409. Northern Alaska, Demarcation Point quad., 1:250,000. Latitude 69 degrees 03'20" N, longitude 142 degrees 19'30" W. From upper part of Triassic. Collector: BP Exploration Co., 1961. Field No: AC 2010.
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AC 2111
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M.
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Indet. ammonite impression
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AC 2112
(Mesozoic loc. M1404)
, Sagavanirktok
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1404. Northern Alaska, Sagavanirktuk quad., 1:250,000. Latitude 69 degrees 18' N, longitude 147 degrees 02' W. From 65 feet below top part of Triassic (315' thick).
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Proclydonautilus cf. P. griesbachi (Mojsisovics)
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Germanonautilus cf. G. brooksi Smith
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Halobia cf. H. zitteli Lindstrom
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D. cf. D. hamiltonense Smith
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Spiriferina cf. S. yukonensis Smith
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AC 2113
(Mesozoic loc. M1405)
, Sagavanirktok
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1405. Northern Alaska, Sagavanirktuk quad., 1:250,000. Latitude 69 degrees 18' N, longitude 147 degrees 02' W. From 40 feet below top part of Triassic (315' thick). Collector: BP Exploration Co., 1961. Field No: AC 2113.
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Monotis ochotica (Keyserling)
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Gryphaea cf. G. arcuataeformis Kiparisova
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Indet. carditoid pelecypod .......
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AC 3006
(Mesozoic loc. M1401)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1401. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 26'50" N, longitude 146 degrees 12' W. From middle part of Triassic. Collector: BP Exploration Co., 1961. Field No: AC 3007.
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Indet. rhynchonellid brachiopods
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AC 3007
(Mesozoic loc. M1402)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1402. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 27'18" N, longitude 146 degrees 13' W. From middle part of Triassic. Collector: BP Exploration Co., 1961.
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AC 5004
(Mesozoic loc. M1403)
, Mt Michelson
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1403. Northern Alaska, Mt. Michelson quad., 1:250,000. Latitude 69 degrees 30'12" N, longitude 146 degrees 40' W.
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Spiriferina cf. S. griesbachi Bittner
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AC 6001
(Mesozoic loc. M1406)
, Sagavanirktok
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1406. Northern Alaska, Sagavanirktuk quad., 1:250,000. Latitude 69 degrees 21' N, longitude 147 degrees 12' W. From top part of Triassic (315' thick). Collector: BP Exploration Co., 1961. Field No: AC 6001.
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Atractites-like belemnite.
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AC 6002
(Mesozoic loc. M1407)
, Sagavanirktok
, None given in Silberling E&R report of 11/13/61; Shipment O-61-8M. M1407. Northern Alaska, Sagavanirktuk quad., 1:250,000. Latitude 69 degrees 21' N, longitude 147 degrees 12' W. From top part of Triassic (315' thick). Collector: BP Exploration Co., 1961. Field No: AC 6002.
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Monotis ochotica (Keyserling)
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Gryphaea cf. G. arcuataeformis Kiparisova
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