Traill Ø [Rødryggen Mbr, Palnatokes Bjerg Fm] (Cretaceous of Greenland)

Where: Greenland (74.5° N, 20.0° W: paleocoordinates 58.9° N, 12.1° E)

• coordinate stated in text

• basin-level geographic resolution

When: Rødryggen Member (Palnatokes Bjerg Formation), Late/Upper Valanginian (140.2 - 136.4 Ma)

• STRATIGRAPHIC RELATIONS: From the of Rødryggen Mbr the Palnatokes Bjerg, which conformably overlies the Bernbjerg Fm (Jurassic) and overlies the Albrechts Bugt Mbr. AGE: Late Valanginian, on the basis of ammonoid and belemnoid biostratigraphy. STRATIGRAPHIC POSITION: Composite list for the formation in this area.

• member-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, concretionary siltstone

• ENVIRONMENT: Assumed to be siliciclastic marine setting.
• SPECIFIC LITHOLOGY: Concretionary unconsolidated siltstone. LITHIFICATION: Poorly lithified, base on facies description and figured specimens

Size class: macrofossils

Preservation: cast, mold/impression, concretion

Collection methods: COLLECTOR: Unknown, possibly Donovan. REPOSITORY: Unknown.

Primary reference: P. Alsen. 2006. The Early Cretaceous (Late Ryazanian-Early Hauterivian) ammonite fauna of North-East Greenland: taxonomy, biostratigraphy, and biogeography. Fossils and Strata 53:1-229 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 83715: authorized by Austin Hendy, entered by Austin Hendy on 27.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for ammonoidea. Other taxa may be present but are not listed. NOMENCLATURE: Authoritative publication, with revision of older names using modern nomenclature, and species-resolution identifications.
Show authors, comments, and common names
Cephalopoda
 Phylloceratida - Phylloceratidae
Phylloceras semisulcatum
Phylloceras semisulcatum d'Orbigny 1842 ammonite
 Ammonitida - Bochianitidae
Bochianites cf. neocomiensis
Bochianites cf. neocomiensis d'Orbigny 1842 ammonite
 Ammonitida - Neocomitidae
Delphinites (Pseudogarneria) christenseni
Delphinites (Pseudogarneria) christenseni Alsen and Rawson 2005 ammonite
 Ammonitida - Lytoceratidae
"Lytoceras cf. exoticum" = Pterolytoceras exoticus
"Lytoceras cf. exoticum" = Pterolytoceras exoticus Oppel 1863 ammonite
 Ammonitida - Polyptychitidae
Polyptychites "sp. 3", Polyptychites "sp. 2", Polyptychites "sp. 1", Polyptychites (Siberiptychites) studendorffi, Polyptychites (Euryptychites) cf. molsbergensis, Polyptychites (Euryptychites) laevis, Polyptychites (Euryptychites) traillensis, Nikitinoceras cf. variisculptus, Nikitinoceras triptychiformis, Nikitinoceras intermedium, Nikitinoceras mokschensis, Tollia paucicostata, "Tollia (Neocraspedites) evoluta" = Tollia (Neocraspedites), "Neocraspedites sp." = Tollia (Neocraspedites), Tollia (Neocraspedites) greenlandica, Tollia (Neocraspedites) undulatocostata
Polyptychites "sp. 3" Pavlow 1892 ammonite
Polyptychites "sp. 2" Pavlow 1892 ammonite
Polyptychites "sp. 1" Pavlow 1892 ammonite
Nikitinoceras triptychiformis Nikitin 1888 ammonite
Nikitinoceras intermedium Klimova 1984 ammonite
Nikitinoceras mokschensis Bogoslowsky 1902 ammonite
"Tollia (Neocraspedites) evoluta" = Tollia (Neocraspedites) ammonite
"Neocraspedites sp." = Tollia (Neocraspedites) Spath 1923 ammonite
Tollia (Neocraspedites) greenlandica Donovvan 1953 ammonite
 Nautilida - Nautilidae
Paracymatoceras rufum
Paracymatoceras rufum Alsen 2006 nautiloid