DJ.1458 [Hidden Lake Fm] (Cretaceous of Antarctica)

Where: Antarctica (63.8° S, 58.0° W: paleocoordinates 63.9° S, 64.8° W)

• coordinate stated in text

• local area-level geographic resolution

When: Hidden Lake Formation, Santonian (86.3 - 83.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Hidden Lake Fm, which regionally overlies the Brandy Bay Mbr and Rum Cove Mbr of the Whisky Bay Fm (Cenomanian-Turonian). AGE: Coniacian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: Includes specimens from 1330.5-1332 m above base of local section, and 342.5-344 m above base of formation.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; unlithified sandstone

• ENVIRONMENT: Shallow siliciclastic marine setting.
• SPECIFIC LITHOLOGY: Sandstone, according to Fig. 3 of Kennedy et al. (2007). LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression

Collection methods: surface (in situ),

• COLLECTOR: Authors: Kennedy, Crame, Bengsten and Thomson. REPOSITORY: Not stated, but presumably either OUM (Oxford) or British Antarctic Survey.

Primary reference: W. J. Kennedy, J. A. Crame, P. Bengsten and M. R. A. Thomson. 2007. Coniacian ammonites from James Ross Island, Antarctica. Cretaceous Research 28(509):531 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 83334: authorized by Austin Hendy, entered by Austin Hendy on 18.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for ammonoidea. Other taxa may be present, but were not listed in present systematic treatment. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications.
Cephalopoda
 Ammonitida - Tetragonitidae
Gaudryceras (Gaudryceras) strictum Kennedy et al. 2007 ammonite
Tetragonites epigonus Kossmat 1895 ammonite
 Ammonitida - Pachydiscidae
 Ammonitida - Nostoceratidae
 Ammonitida - Diplomoceratidae
Pseudoxybeloceras (Pseudoxybeloceras) sp. Wright and Matsumoto 1938 ammonite