Reference Detail of

Report on Referred Fossils
Edit Reference Add/Edit Sample Sample List Show Map
Stratigraphic range: Upper Jurassic & Cretaceous
Kinds of fossils: Mollusks
Quadrangle or area: Nabesna, Southern Alaska
Shipment No.: A-71-6M
Referred by: Richter, Donald H.
Report prepared by: Jones, David L.
Date: 05/20/1971

The following preliminary report covers fossils collected by Richter and Jones from the Eastern Alaskan Range. The zonation of Buchias recognized is:

CRETACEOUS
Valanginian

lower Valanginian or upper Berriasian  
Berriasian
B. sublaevis (Imlay)
B. crassicollis solida (Lahusen)
B. n. sp. cf. B. tolmatchowi
B. okensis (Pavlow)
JURASSIC
Tithonian
Kimmeridgean
Oxfordian
B. fischeriana
B. rugosa
B. concentrica

User Note module to be added
69-JNA-2-4 (M5412) , Nabesna
Probably Buchia sublaevis (Imlay)
69-JNA-2-10 (M5418) , Nabesna
"Turbo" sp.
Belemnite scrap
Buchia sp.
Buchia n sp. cf. B. tolmatschowi
69-JNA-2-11 (M5419) , Nabesna
Buchia tolmatschowi, transitional to B. pacifica
69-JNA-2-17 (Mesozoic loc. M5425) , Nabesna , No Data; Mesozoic loc. M5425, Coarse Money Creek, 1 mile upstream from its junction with Bonanza Creek, SW1/4 sec. 17, T. 4 N., R. 20 E. All localities in central and west-central part of the Nabesna A-2 quadrangle in eastern part of Alaska Range. Buchia fischeriana. (description from Imlay and Detterman, 1973, p. 27)
Buchia fischeriana
69-JNA-2-12 (M5420) , Nabesna
Buchia n. sp. cf. B. tolmatschowi
69-JNA-2-13 (M5421) , Nabesna
Buchia n. sp. cf. B. tolmatschowi
69-JNA-2-9 (M5417) , Nabesna
Buchia n. sp (?) cf. B. tolmatschowi (?)
69-JNA-2-8 (M5416) , Nabesna
Buchia sublaevis (Imlay)
69-JNA-2-15 (M5423) , Nabesna
Buchia okensis
69-JNA-2-16 (M5424) , Nabesna
Buchia okensis
Ammonite scrap
69-JNA-2-20 (M5428) , Nabesna
Buchia n. sp. cf. B. tolmatschowi
69-JNA-2-7 (M5415) , Nabesna
Buchia sublaevis (Imlay)
69-JNA-2-18 (M5426) , Nabesna
Buchia cf. B. fischeriana
69-JNA-2-1 (M5409) , Nabesna
Inoceramus sp.
69-JNA-2-2 (M5410) , Nabesna
Inoceramus sp. cf. I. ovatoides?
70-JNA-2-9 (M5559) , Nabesna
Tollia cf. T. paucicostata (Donovan)
Buchia n. sp. cf. B. tolmatschowi
70-JNA-2-16 (M5566) , Nabesna
Buchia tolmatschowi transitional to B. pacifica
68-AMn-247 (Mesozoic loc. M5376) , Nabesna , Nabesna A-2 quad. Lat. 62 deg. 07.5'N., Long. 141 deg. 49.0'W. Elev. 5700 feet in SE 1/4 sec. 18, R20E, T4N. From argillite-mudstone member. (description from transmittal sheet of Richter)
Buchia cf. B. okensis
68-ARh-284 (Mesozoic loc. M5371) , Nabesna , Nabesna A-2 quad. Lat. 62 deg. 06.7'N, Long. 141 deg. 49.9'W. Elev. 4700 feet in SE 1/4 Sec. 24, R19E, T4N. Same as 68-ARh-271 but 200'+/- stratigraphically lower. (description from transmittal sheet of Richter)
Buchia crassicollis solida
Buchia sublaevis (Imlay)
68-ARh-62 (Mesozoic loc. M5383) , Nabesna , Nabesna B-4 quad. Lat. 62 deg. 19.6'N, Long. 142 deg. 50.00'W. Elev. 4500 feet in SW 1/4 Sec. 4, R14E, T6N. From siltstone in siltstone-conglomerate sequence. (description from transmittal sheet of Richter)
Buchia fischeriana
69-ARh-164 (M5388) , Nabesna
Buchia cf. okensis (?)
68-AMn-252 (Mesozoic loc. M5372) , Nabesna , Nabesna A-2 quad. Lat. 62 deg. 06.8'N., Long. 141 deg. 49.0'W. Elev. 5700 feet in SE 1/4 Sec. 19, R20E, T4N. From argillite-mudstone member 200-500 feet stratigraphically lower than 68ARh-284. (description from transmittal sheet of Richter)
Buchia sublaevis (Imlay)
68-ARh-4 (Mesozoic loc. M5382) , Nabesna , Nabesna C-5 quad. Lat. 62 deg. 41.9'N., Long. 143 deg. 24.7'W. Elev. 3900 feet in SE 1/4 Sec. 30, R11E, T11N. From massive argillite near base of unit. (description from transmittal sheet of Richter)
Buchia scraps
68-AMn-259 (Mesozoic loc. M5380) , Nabesna , Nabesna A-2 quad. Lat. 62 deg. 07.0'N, Long. 141 deg. 47.0'W. Elev. 4900 feet in NE 1/4 Sec. 20, R20E, T4N. From argillite-mudstone member about 2000' +/-stratigraphically lower than 68-AMn-252. (description from transmittal sheet of Richter)
Buchia sp.
68-ARh-3 (Mesozoic loc. M5381) , Nabesna , Nabesna C-5 quad. Lat. 62 deg. 41.7'N, Long. 143 deg. 24.5'W. Elev. 3700 feet in NE 1/4 sec. 31, R11E, T11N. From massive argillite near base of unit. (description from transmittal sheet of Richter)
Buchia sp. scrap - may be rugosa (?)
68-ARh-290 (Mesozoic loc. M5379) , Nabesna , Nabesna A-2 quad. Lat. 62 deg. 07.8'N, Long. 141 deg. 53.9'W. Elev. 4500 in NE 1/4 sec. 15, R19E, T4N. From argillite-mudstone member. (description from transmittal sheet of Richter)
Buchia sp. indet.
68-ARh-297 (M5378) , Nabesna
Belemnie scraps
Oxytoma? scraps
Buchia sp. - cf. B. sublaevis (Imlay)
70-JNA-2-14 (Mesozoic loc. M5564) , Nabesna , No Data; Mesozoic loc. M5564, Chathenda Creek, 5.3 miles N. 46° E. of outlet of Little Beaver Lake. All localities in central and west-central part of the Nabesna A-2 quaerangle in eastern part of Alaska Range. Buchia fischeriana. (description from Imlay and Detterman, 1973, p. 27)
Buchia fischeriana
70-JNA-2-13 (Mesozoic loc. M5563) , Nabesna , No Data; Mesozoic loc. M5563, south side of Chathenda Creek, 5.2 miles N. 46° E. of outlet of Little Beaver Lake, SE1/4 sec. 22, T. 4 N., R. 20 E. All localities in central and west-central part of the Nabesna A-2 quadrangle in eastern part of Alaska Range. Buchia fischeriana. (description from Imlay and Detterman, 1973, p. 27)
Buchia fischeriana
70-ARh-91 (M5595) , Nabesna
Buchia sp. -- may be fischeriana?
69-JNA-2-14 (M5422) , Nabesna
Buchia n. sp. aff. B. tolmatschowi
Tollia sp. cf. T. paucicostata (Donovan)
70-JNA-2-2 (M5552) , Nabesna
Buchia sublaevis (Imlay)
Buchia sp. juv. cf. B. majuscula?
70-JNA-2-8 (M5558) , Nabesna
Buchia sp. (crushed)
small Belemnite
70-JNA-2-7 (M5557) , Nabesna
Buchia cf. B. uncitoides
70-JNA-2-4 (M5554) , Nabesna
Buchia sublaevis (Imlay)
large Belemnite
70-JNA-2-10A (M5560A) , Nabesna
Buchia okensis (juv.)
70-JNA-2-10 (M5560) , Nabesna
Buchia okensis
70-JNA-2-1 (M5551) , Nabesna
crushed Buchia sublaevis or crassicollis?
70-JNA-2-3 (M5553) , Nabesna
Buchia sublaevis (Imlay)
70-JNA-2-17 (M5567) , Nabesna
Inoceramus scrap
69-ARh-25 (M5387) , Nabesna
Buchia scrap - may be B. fischeriana at a guess
70-JNA-2-18 (M5568) , Nabesna
Buchia crassicollis or sublaevis ??
69-AMn-42 (Mesozoic loc. M5386) , Nabesna , No Data; Mesozoic loc. M5386, upper part of Chathenda Creek, 6.5 miles N. 75° E. of outlet of Little Beaver Lake at elevation of 5,300 ft. All localities in central and west-central part of the Nabesna A-2 quadrangle in eastern part of Alaska Range. Buchia fischeriana. (description from Imlay and Detterman, 1973, p. 27)
Buchia fischeriana
70-ARh-75 (M5592) , Nabesna
Inoceramus sp. indet.
70-ARh-77 (M5593) , Nabesna
Buchia sp. indet.
69-ARh-57a (M5384) , Nabesna
Buchia sp.
70-ARh-128 (M5596) , Nabesna
Buchia cf. B. fischeriana
69-JNA-2-23 (M5431) , Nabesna
Buchia sp.
70-ARh-78 (M5594) , Nabesna
Buchia n. sp. cf. B. tolmatschowi
70-ARh-39 , Nabesna
Worm tracks - several different kinds
69-JNA-2-21 (M5429) , Nabesna
Buchia n. sp. cf. B. tolmatschowi
Tollia sp. cf. T. paucicostata (Donovan)
69-JNA-2-22 (M5430) , Nabesna
Buchia n. sp. cf. B. tolmatschowi
69-JNA-2-19 (M5427) , Nabesna
Buchia sp. indet.
69-JNA-2-6 (M5414) , Nabesna
Buchia sublaevis (Imlay)
69-JNA-2-5 (M5413) , Nabesna
Buchia sublaevis (Imlay)
Buchia crassicollis solida
69-JNA-2-3 (M5411) , Nabesna
Buchia crassicollis solida
Buchia sublaevis (Imlay)
68-ARh-75 (Mesozoic loc. M5375) , Nabesna , Nabesna B-4 quad. Lat. 62 deg. 21.1'N, Long. 142 deg. 49.5'W. Elev. 4000 feet in NE 1/4 Sec. 33, R14E, T7N. From siltstone in siltstone-conglomerate sequence. (description from transmittal sheet of Richter)
Buchia fischeriana
indet. clam
68-AMn-257 (Mesozoic loc. M5377) , Nabesna , Nabesna A-2 quad. Lat. 62 deg. 07.4'N, Long. 141 deg. 44.3'W. Elev. 5200 feet in SW 1/4 Sec. 15, R20E, T4N. From argillite-graywacke graded bed member 100' +/- below argillite member. (description from transmittal sheet of Richter); Mesozoic loc. M5377, south side of Bonanza Creek, 5.4 miles N. 57° E. of junction with Chathenda Creek in SW1/4 sec. 15,T. 4 N., R. 20 E. All localities in central and west-central part of the Nabesna A-2 quadrangle in eastern part of Alaska Range. Buchia fischeriana. (description from Imlay and Detterman, 1973, p. 27)
Buchia fischeriana
68-ARh-271 (Mesozoic loc. M5373) , Nabesna , Nabesna A-2 quad. Lat. 62 deg. 06.5'N., Long. 141 deg. 50.1'W. Elev. 4600 feet in SE 1/4 Sec. 24, R19E, T4N. From argillite-mudstone member within 100' of top of unit. (description from transmittal sheet of Richter)
Buchia sublaevis (Imlay)
68-AMn-258 (Mesozoic loc. M5374) , Nabesna , Nabesna A-2 quad. Lat. 62 deg. 07.4'N, Long. 141 deg. 44.0'W. Elev. 5300 feet in SW 1/4 Sec. 15, R20E, T4N. Same as 68-AMn-257. (description from transmittal sheet of Richter)
Buchia sp. cf. B. fischeriana