Also known as USGS M1489
Where: Kodiak County, Alaska (56.5° N, 154.3° W: paleocoordinates 57.8° N, 150.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Narrow Cape Formation, Early/Lower Miocene to Early/Lower Miocene (23.0 - 11.6 Ma)
• Unknown stratigraphic position within Narrow Cape Formation. Late Oligocene or early Miocene age. Overlies Early Oligocene Sitkinak Formation. Total thickness of formation about 210 m.
• bed-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified, concretionary, pebbly siltstone
Size class: macrofossils
Preservation: concretion
Reposited in the USNM
Collection methods: quarrying,
• Collections housed in USGS, Menlo Park; University of Alaska, and USNM
Primary reference: R. C. Allison and L. Marincovich. 1981. A late Oligocene or earliest Miocene molluscan fauna from Sitkinak Island, Alaska. United States Geological Survey Professional Paper 1233:1-11 [A. Miller/A. Hendy/M. Krause]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 37660: authorized by Austin Hendy, entered by Austin Hendy on 19.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
"Turritella (Hataiella) sp." = Hataiella
"Turritella (Hataiella) sp." = Hataiella Kotaka 1959 turret shell | |
"Echinophoria apta" = Liracassis apta
"Echinophoria apta" = Liracassis apta Tegland 1931 snail | |
Musashia (Musashia) sp. Hayashi 1966 volute | |
Ancistrolepis aff. beringianus true whelk
Ancistrolepis aff. eucosmius true whelk
Buccinum sp. Linnaeus 1758 true whelk
? Beringius sp. Dall 1886 true whelk | |
Priscofusus clarki snail | |
Parasyrinx sp. Finlay 1924 turrid | |
Bivalvia | |
Spisula cf. hannibali Clark and Arnold 1923 clam | |
Liocyma cf. fluctuosa Gould 1841 venus clam | |
? Serripes hamiltonensis Clark 1932 cockle | |
Macoma sp. Leach 1819 tellin clam | |
Hiatella arctica Linnaeus 1767 clam | |
Cyclocardia cf. belogolovensis, Cyclocardia cf. subnipponica, Cyclocardia cf. wajampolkensis, Cyclocardia cf. tokunagai
Cyclocardia cf. tokunagai Yokoyama 1924 clam |