Taas-Aryy Island (Ulakhan-Krest Formation 16 (1 m) (Triassic of Russian Federation)

Where: Russian Federation (71.8° N, 127.2° E: paleocoordinates 66.1° N, 7.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Nathorstites lindstroemi ammonoid zone, 16 Member (Ulakhan-Krest Formation), Ladinian (242.0 - 237.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, fine-grained, concretionary, green sandstone

• Dense-green (up to green-gray, in the roof) fine-

•grained sandstones with interbeds of large (up to 2 m)

•loaf-like calcareous concretions, with lenses of calcareous

•sandstones, and interbeds (2–30 cm thick) rich in echi-

•noid spines, with lumachelle lenses.

Size class: macrofossils

Primary reference: A. G. Konstantinov, E. S. Sobolev, and A. V. Yadrenkin. 2007. Detailed biostratigraphy of Triassic deposits in the Lena lower reaches(northern Yakutia). Russian Geology and Geophysics 48:721-736 [M. Aberhan/D. Wellmanns]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 124563: authorized by Martin Aberhan, entered by Daniel Wellmanns on 18.02.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Cardiniodes fidus
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp.
Dentalium sp. Linnaeus 1758 tusk shell
Bivalvia
 Pectinida - Oxytomidae
Meleagrinella tasaryensis, Oxytoma gussevi
Meleagrinella tasaryensis Voronetz 1936 scallop
 Ostreida - Bakevelliidae
Bakevellia (Boreobakevellia) bennetti, Bakevellia (Maizuria) ladinica
Bakevellia (Maizuria) ladinica Kurushin 1980 oyster
 Trigoniida - Trigonodidae
Janaija praelonga
Janaija praelonga Kiparisova 1937 clam
 Nuculanida - Malletiidae
Taimyrodon olenekensis
Taimyrodon olenekensis Kiparisova 1937 clam
Cephalopoda
 Ceratitida - Nathorstitidae
Nathorstites lindstroemi
Nathorstites lindstroemi Boehm 1903 ceratite