SBDE Quarry 95E5, Erenhot (Cretaceous to of China)

Also known as Iren Dabasu

Where: Nei Mongol, China (43.7° N, 112.2° E: paleocoordinates 43.0° N, 100.8° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Iren Dabasu Formation, Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• 10 cm thick bonebed, on top of 40-55 cm thick sandy sequence.

•The Iren Dabasu Formation is Middle–Late Campanian according to Xing et al. 2012

• bed-level stratigraphic resolution

Environment/lithology: fluvial; poorly lithified, fine-grained, micaceous, brown, gray, yellow, argillaceous, calcareous sandstone

• formation was a "low-sinuousity braided fluvial system with a main NW direction and with ancillary NE and SW oriented flow systems"
• "The succession is composed of poorly sorted, fine to very coarse, slightly lithified, brownish grey and buff quartz sand. Quartz grains are mostly medium to fine sized, subrectangular to subrounded (larger grains are generally subrounded), translucent to milky and occasionally reddish due to staining by iron oxides. Argillaceous and slightly calcareous coatings are common. Traces of mica and dark-coloured grains occur."

Size class: macrofossils

Collected by SBDE in 1995-1996

Collection methods: quarrying, mechanical,

Primary reference: P. Godefroit, Z.-M. Dong, P. Bultynck, H. Li, and L. Feng. 1998. New Bactrosaurus (Dinosauria: Hadrosauroidea) material from Iren Dabasu (Inner Mongolia, P. R. China). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre 68(supplement):3-70 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38833: authorized by Matthew Carrano, entered by Matthew Carrano on 07.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Neornithischia -
Bactrosaurus johnsoni Gilmore 1933 bird foot dinosaur