Where: Valdez-Cordova County, Alaska (61.5° N, 144.5° W: paleocoordinates 55.8° N, 85.0° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Douvilleiceras mammillatum ammonoid zone, Early/Lower Albian (112.0 - 109.0 Ma)
• STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit, informally referred to as Unit K1. AGE: Early Albian, on the basis of ammonoid biostratigraphy; Douvilleiceras mammillatum zone. STRATIGRAPHIC POSITION: From siltstone immediately above basal sandstone within region section.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified siltstone
Size class: macrofossils
Reposited in the USNM
• COLLECTOR: Not stated in text. REPOSITORY: Not stated, but likely USNM.
Primary reference: D. L. Jones and H. C. Berg. 1964. Cretaceous stratigraphy of the McCarthy A-4 Quadrangle, southern Alaska. United States Geological Survey Bulletin 1180(A):1-18 [A. Hendy/A. Hendy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 88627: authorized by Austin Hendy, entered by Austin Hendy on 16.04.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Calliphylloceras nizinanum Imlay 1960 ammonite | |
Douvilleiceras mammillatum Schlotheim 1813 ammonite | |
Tetragonites kiliani ammonite | |
Hulenites sp. Matsumoto 1955 ammonite | |
Parasilesites bullatus Imlay 1959 ammonite
Grantziceras glabrum Whiteaves 1889 ammonite
Brewericeras hulenense Anderson 1938 ammonite
Puzosia alaskana Imlay 1960 ammonite | |
Arcthoplites belli McLearn 1945 ammonite |