AFI 75b (Ordovician of China)

Where: Sichuan, China (28.3° N, 103.8° E: paleocoordinates 17.9° N, 136.4° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Undulograptus austrodentatus graptolite zone, Dashaba Formation, Darriwilian (467.3 - 458.4 Ma)

• Latest Arenig; Undulograptus austrodentatus zone [JA: reassigned to the Darriwilian based on conodont zonation]

• group of beds-level stratigraphic resolution

Environment/lithology: mudstone

• Buff mudstone with interbedded silty mudstone, fossiliferous.

Size class: macrofossils

Collection methods: AFI

Primary reference: R.-B. Zhan and J. Jin. 2005. Brachiopods from the Dashaba Formation (Middle Ordovician) of Sichuan Province, south-west China. Special Papers in Palaeontology 74:1-63 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64227: authorized by Pete Wagner, entered by Pete Wagner on 04.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Orthida - Archaeorthidae
Nothorthis perplexa
Nothorthis perplexa Xu and Liu 1984
 Orthida - Orthidae
Paralenorthis sp.
Paralenorthis sp. Havlicek and Branisa 1980
 Orthida - Productorthidae
Saucrorthis obscura
 Orthida - Glyptorthidae
Parisorthis dischidanteris
Parisorthis dischidanteris Zhan and Jin 2005
Strophomenata
 Strophomenida - Rafinesquinidae
Pentagomena parvicostellata
Pentagomena parvicostellata Zhan and Jin 2005
 Strophomenida - Grorudiidae
Calyptolepta chengkouensis
 Strophomenida - Leptellinidae
Leptastichidia catatonosis
Leptastichidia catatonosis Zhan and Jin 2005