Bateaobao Formation, Bateaobao Area, Damao Qi, Neimonggol Province (Silurian to of China)

Where: Nei Mongol, China (42.0° N, 110.0° E: paleocoordinates 23.9° S, 110.0° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Bateaobao Formation, Wenlock to Wenlock (433.4 - 423.0 Ma)

• Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli. Fossils have been referred by earlier authors to the Ludlow. "We suggest that this unit is of Late Wenlock-Ludlow age. The base of this unit is unknown. The overlying unit is poorly known, but may be of Ludlow and Pridoli age, and needs additional study."

• formation-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, gray limestone and green, yellow, silty shale

• Stratigraphic chart indicates BA 3.
• "...a series of gray and reddish-gray, thick-bedded and massive, bioclastic, crystalline limestone and medium- to thin-bedded limestone interbedded with yello-green, silty shale and sandstone. Locally it is rich in fossils [details]...The unit is about 500 m thick."

Primary reference: E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27731: authorized by Michael Foote, entered by Michael Foote on 07.01.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Stromatoporoidea
 Clathrodictyida - Clathrodictyidae
Clathrodictyon sp. Nicholson and Murie 1878 stromatoporoid sponge
 Stromatoporida - Syringostromellidae
Syringostromella cf. borealis stromatoporoid sponge
Anthozoa
 Heliolitida - Stelliporellidae
Derivatolites sp. Bondarenko 1971 tabulate coral
 Favositida - Alveolitidae
Tuvaelites sp. Chekhovich 1971 tabulate coral
 Favositida - Favositidae
Favosites sp. Lamarck 1816 tabulate coral
Mesofavosites sp. Sokolov 1951 tabulate coral
 Stauriida - Mucophyllidae
Stylopleura sp. Merriam 1973 horn coral
 Stauriida - Entelophyllidae
Altaja maxima horn coral
Altaja regularis horn coral
Altaja sinensis horn coral
Migmatophyllum sp. Pedder 1971 horn coral
 Stauriida - Acervulariidae
Trilobita
 Phacopida - Cheiruridae
Cheiruridae indet. Hawle and Corda 1847 trilobite
 Phacopida - Encrinuridae
Encrinuroides sp. Reed 1931 trilobite
 Corynexochida - Illaenidae
Illaenidae indet. Hawle and Corda 1847 trilobite
 Corynexochida - Styginidae
Scutellum sp. Pusch 1833 trilobite
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Rhynchonellata
 Pentamerida - Pentameridae
? Kirkidium sp. Amsden et al. 1967
"Conchidium or Kirkidium"
? Pentamerus sp. Sowerby 1813
 Pentamerida - Subrianidae
? Conchidium sp. Oehlert 1887
"Conchidium or Kirkidium"
Stenolaemata
 Cystoporata - Constellariidae
Stellipora sp. Hall 1847
Cephalopoda
 Discosorida - Phragmoceratidae
Phragmoceras sp. Broderip 1839
Conodonta
 Ozarkodinida - Spathognathodontodae
"Spathognathodus inclinatus" = Wurmiella excavata
"Spathognathodus inclinatus" = Wurmiella excavata Branson and Mehl 1933 conodont
 Panderodontida - Panderodontidae
Panderodus unicostatus Branson and Mehl 1933 conodont