Also known as Euphemites-Turbonitella assemblage, Tsingyuan Fm. (Upper Mbr.), Inner Mongolia,

Where: Nei Mongol, China (39.0° N, 106.0° E: paleocoordinates 13.2° N, 69.3° E)

When: Reticuloceras(2) zone, Upper Member (Tsingyuan Formation), Bashkirian (323.2 - 315.2 Ma)

• The assemblage is associated with ammonoids Bilingnites gracilis, which is equivalent

•to the West European R2 bed or Nm2c1 bed of pre-Russian (Ruan and Zhou, 1987). The conodont Idiognathoides attennata zone is equal to West European R2 zone. (Wang, 1987).

•Reticuloceras (2) = early Bashkirian.

• member-level stratigraphic resolution

Environment/lithology: marine; limestone and shale

Primary reference: H. Pan. 1997. Namurian (Lower Carboniferous) gastropod assemblages from Ningxia, China. Journal of Paleontology 71(4):599-609 [J. Alroy/M. Sommers/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 673: authorized by John Alroy, entered by Mike Sommers on 17.02.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)