Xia MaJiaGou Fm., Southern region of QingShuiHe County, Nei Mongo Prov., China (Ordovician of China)

Where: Nei Mongol, China (40.0° N, 112.0° E: paleocoordinates 13.5° S, 127.7° E)

• local area-level geographic resolution

When: Xia Majiagou Formation, Arenig (478.6 - 466.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, gray, yellow, sandy, calcareous lime mudstone and limestone

• light gray mudlimestone and limestone interbedded with calcitic shale and brecciated mudlimestone at top and yellowish green thin-bedded mudlimestone interbedded with fine-grained quartz sandstone

Primary reference: Nei Monggol Stratigraphic Group. 1978. Regional stratigraphic table of northern China, Nei Monggol part. Geological Publishing House, Beijing, China 1-338 [A. Miller/P. Novack-Gottshall/A. Rees]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8542: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 01.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

 Asaphida - Asaphidae
Pseudoasaphus sp. Schmidt 1901 trilobite