Omolon River basin (omkutchanicum zone) (Triassic of Russian Federation)

Where: Russian Federation (65.3° N, 160.5° E: paleocoordinates 65.2° N, 51.4° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Protrachyceras omkutchanicum zone, Julian (235.0 - 232.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: Y.u. M. Bychkov, A. S. Dagys, A. F. Efimova and I. V. Polubotko. 1976. Atlas Triasovoj fauny i fory Severo-Vostoka SSSR [Atlas of Triassic fauna and flora from North-East USSR]. 1-267 [A. Dunhill/B. Allen/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 202709: authorized by Alex Dunhill, entered by Bethany Allen on 19.07.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Terebratulida - Zeilleriidae
Zeilleria kedonensis n. sp.
Zeilleria kedonensis n. sp. Dagys 1977
IGiG 385-34 (holotype); found at River Kedona
 Spiriferinida - Pennospiriferinidae
Pennospiriferina costata
Bivalvia
 Ostreida - Halobiidae
Halobia atsuensis, Daonella korkodonica
Halobia atsuensis Tokuyama 1959 oyster
Daonella korkodonica Bychkov et al. 1976 oyster
 Pectinida - Oxytomidae
Oxytoma tokuyamae, Oxytoma atsuensis
Oxytoma tokuyamae Bychkov et al. 1976 scallop
Oxytoma atsuensis Tokuyama 1959 scallop
 Pectinida - Pectinoidae
Chlamys (Chlamys) anscutella, Tosapecten simakovi, Tosapecten subpolaris
Chlamys (Chlamys) anscutella Bychkov et al. 1976 scallop
Tosapecten simakovi Bychkov et al. 1976 scallop
Tosapecten subpolaris Bychkov et al. 1976 scallop
Cephalopoda
 Ceratitida - Trachyceratidae
"Protrachyceras omkutchanicum" = Boreotrachyceras omkutchanicum
"Protrachyceras omkutchanicum" = Boreotrachyceras omkutchanicum Bychkov 1973 ceratite