Golmud City, Qinghai (No. A), Buqu Formation: Bathonian, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Acromytilus bathonicus
Mactrom yaqinghaiensis
Bivalvia - Pholadomyida - Pholadomyidae
Pholadomya qinghaiensis Wen 1979
Bivalvia - Pholadida - Ceratomyidae
Myopholas multicostata (Agassiz 1842)
Ceratomya bajocina
Ceratomya undulata
Ceratomya concentrica Sowerby 1822
Bivalvia - Pholadida - Pleuromyidae
Pleuromya subelongata
original and current combination Myacites (Pleuromya)
Bivalvia - Cardiida - Neomiodontidae
Neomiodon yanshipingensis
Bivalvia - Cardiida - Arcticidae
Anisocardia gibbosa
Anisocardia (Anisocardia) togtonheensis
Anisocardia (Antiquicyprina) trapezoidalis
original and current combination Antiquicyprina
Bivalvia - Cardiida - Cardiidae
Protocardia strickland
Protocardia hepingxiangensis
Bivalvia - Cardiida - Quenstedtiidae
Quenstedtia oblita
Bivalvia - Mytilida - Mytilidae
Modiolus (Modiolus) trigonus
Bivalvia - Arcida - Parallelodontidae
Grammatodon (Grammatodon) clathratum
Bivalvia - Ostreida - Pinnidae
Pinna tibetica
Pinna nyainrongensis
Bivalvia - Ostreida - Malleidae
Isognomon (Mytiloperna) patchamensis
original and current combination Mytiloperna
Isognomon (Mytiloperna) bathonicus
original and current combination Mytiloperna
Bivalvia - Ostreida - Bakevelliidae
Gervillella orientalis (Douvillé 1916)
Gervillella qinghaiensis Wen 1979
Bivalvia - Ostreida - Gryphaeidae
Praeexogyra acaminata
Liostrea jiangjinensis
Liostrea zadoensis
Liostrea birmanica (Reed 1936)
Bivalvia - Ostreida - Ostreidae
Lopha maliensis
Lopha baqensis
Bivalvia - Pectinida - Oxytomidae
Pteria problematica Chen 1976
recombined as Jianchuania problematica
Bivalvia - Pectinida - Pectinidae
Camptonectes lameinatus
Camptonectes (Camptonectes) auritus (Schlotheim 1813)
Radulopecten shuanghuensis
Radulopecten tipperi Cox 1936
Bivalvia - Pectinida - Entoliidae
Entolium nieniexionglaensis
Cephalopoda - Ammonitida - Perisphinctidae
Procerites sp. Siemiradzki 1898
Neuqueniceras yokoya
Choffatia cf. vicenti
Siemiradzkia cf. matisconensis
see common names

Geography
Country:China
Coordinates: 33.8° North, 91.3° East (view map)
Paleocoordinates:25.8° North, 88.7° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Middle Jurassic
Stage:Bathonian 10 m.y. bin:Jurassic 4
Key time interval:Bathonian
Age range of interval:168.20000 - 165.30000 m.y. ago
Stratigraphy
Formation:Buqu
Stratigraphic resolution:formation
Lithology and environment
Primary lithology:oncoidal lithified silty "limestone"
Secondary lithology: lithified mudstone
Lithology description: The lower limit of this formation is characterized by emergence of limestone, whilst the top limit is defined by the disappearance of limestone and appearance of scarlet mudstone.
Environment:platform/shelf-margin reef
Glacial or sequence phase:transgressive
Geology comments: As the greatest production during the marine
transgression in this area, it is mainly developed as a
carbonate platform (or gentle slope) sedimentary system,
including local marine platform facies, open marine platform
facies, platform marginal facies, fore-platform slope
facies, and continental shelf sedimentary facies
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:paleoecologic analysis
Metadata
Database number:127178
Authorizer:M. Aberhan Enterer:D. Wellmanns
Research group:marine invertebrate
Created:2012-05-01 00:42:13 Last modified:2012-04-30 09:42:13
Access level:authorizer only Released:2017-05-01 00:42:13
Creative Commons license:CC BY
Reference information

Primary reference:
41317. H. Z. Yao, R. J. Zhang, Q. F. Duan, X. C. Sheng, Z. J. Niu, J. X. Wang, B. F. Zeng and J. H. Wu. 2011. Jurassic rocks, bivalves, and depositional environments of the source area of the Yangtze River, Qinghai Province, western China. Sci China Earth Sci 54(8):1136-1148 [M. Aberhan/D. Wellmanns]