USGS Mesozoic 24877, Billy Creek (Cretaceous of the United States)

Where: Alaska (62.0° N, 147.7° W: paleocoordinates 57.3° N, 85.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Early/Lower Albian (112.0 - 109.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine

Size class: macrofossils

Reposited in the USNM

Primary reference: R. W. Imlay. 1959. New genera of early Cretaceous (Albian) Ammonites from Alaska. Journal of Paleontology 33(1):179-185 [M. Aberhan/M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38514: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 23.04.2004, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Desmoceratidae
"Beudanticeras glabrum" = Grantziceras glabrum, "Beudanticeras (Grantziceras) multiconstrictum" = Grantziceras affine
"Beudanticeras glabrum" = Grantziceras glabrum Whiteaves 1889 ammonite
"Beudanticeras (Grantziceras) multiconstrictum" = Grantziceras affine Whiteaves 1892 ammonite
 Ammonitida - Cleoniceratidae
"Lemuroceras talkeetnanum n. sp." = Arcthoplites (Subarcthoplites) talkeetnanus, Freboldiceras singulare n. gen. n. sp.
"Lemuroceras talkeetnanum n. sp." = Arcthoplites (Subarcthoplites) talkeetnanus Imlay 1960 ammonite
similar to L. indicum
Freboldiceras singulare n. gen. n. sp. Imlay 1959 ammonite