USGS Mesozoic 3029, Iniskin Bay (Jurassic of the United States)

Where: Alaska (59.7° N, 153.4° W: paleocoordinates 31.5° N, 86.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Chinitna Formation, Callovian (166.1 - 163.5 Ma)

• Chinitna formation, upper part of middle third.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collected by T.W. Stanton in 1904; reposited in the USNM

Primary reference: R. W. Imlay. 1953. Callovian (Jurassic) ammonites from the United States and Alaska Part 2. Alaska Peninsula and Cook Inlet regions. United States Geological Survey Professional Paper 249-B:41-108 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 158916: authorized by Matthew Clapham, entered by Matthew Clapham on 22.07.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Phylloceratida - Phylloceratidae
 Ammonitida - Sphaeroceratidae
Lilloettia buckmani Crickmay 1930 ammonite
 Ammonitida - Cardioceratidae
Cadoceras bathomphalum Imlay 1953 ammonite
Cadoceras doroschini Eichwald 1871 ammonite
Cadoceras tenuicostatum n. sp. Imlay 1953 ammonite
"Pseudocadoceras grewingki" = Cadoceras (Pseudocadoceras) grewingki Pompeckj 1900 ammonite
"Cadoceras catostoma" = Cadoceras (Pseudocadoceras) catostoma Pompeckj 1900 ammonite
Cadoceras comma Imlay 1953 ammonite
Cadoceras glabrum Imlay 1953 ammonite
Cadoceras wosnessenskii Grewingk 1850 ammonite
 Ammonitida - Oppeliidae
Oppelia (Oxycerites) chinitnana n. sp. Imlay 1953 ammonite