XiaQiaoJia Fm., HuaDanLou, NinNan Co., SiChuan Prov., China (Ordovician of China)

Where: SiChuan, China (27.0° N, 103.0° E: paleocoordinates 19.3° N, 135.7° E)

• local area-level geographic resolution

When: Xiaqiaojia Formation, Llanvirn (468.0 - 458.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, ferruginous sandstone and limestone

• ferric sandstone or limestone with purplish red to light red thick-bedded mud limestone

Primary reference: X. Chen, T. E. Chen, X. P. Zhou, J. Y. Qiu, Y. N. Ni and X. C. Yang. 1988. Ordovician system of the Lower Yangtze region in Jiangsu Province. Sinian-Triassic biostratigraphy of the Lower Yangtze peneplatform in Jiangsu Region 81-126 [A. Miller/P. Novack-Gottshall/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 7951: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 09.06.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Protarea sp.
Trilobita
 Lichida - Lichidae
Metopolichas sp., "Amphilichas sp." = Amphilichas, "Platymetopus sp." = Amphilichas
Metopolichas sp. Gürich 1901 trilobite
"Amphilichas sp." = Amphilichas Raymond 1905 trilobite
"Platymetopus sp." = Amphilichas Raymond 1905 trilobite
 Phacopida - Cheiruridae
Ceraurinus sp.
Ceraurinus sp. Barton 1913 trilobite
 Phacopida - Calymenidae
Calymene sp.
Calymene sp. Brongniart 1822 trilobite
Rhynchonellata
 Orthida - Plaesiomyidae
Metorthis sp.
Gastropoda
 Euomphalina - Ophiletidae
Ecculiomphalus sp.
Ecculiomphalus sp. Portlock 1843 snail
Cephalopoda
 Orthocerida - Orthoceratidae
Sinoceras sp., Michelinoceras sp.
Sinoceras sp. Shimizu et al. 1935
Michelinoceras sp. Foerste 1932
 Ellesmerocerida - Protocycloceratidae
Protocycloceras sp.
Pterobranchia
 Graptoloidea - Dicranograptidae
Dicranograptus sp.
Dicranograptus sp. Hall 1865 graptolite
 Rhombifera - Echinosphaeritidae
Echinosphaerites sp.
Echinosphaerites sp. Wahlenberg 1818
 Sphaeronitida - Aristocystitidae
Sinocystis sp.
Demospongiae
 Lithistida - Anthaspidellidae
Archaeoscyphia sp.
Archaeoscyphia sp. Hinde 1889 demosponge
Anthozoa
 Stauriida - Calostylidae
Calostylis sp., Ningnanophyllum sp., Yohophyllum sp.
Calostylis sp. Lindström 1868 horn coral
Ningnanophyllum sp. Lin 1965 horn coral
Yohophyllum sp. Lin 1965 horn coral