Sample AAN14, Xinyuan, Ziyun: Spathian, China
collected by Y.K. Wang, Z.G. Zheng 1963

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ceratitida - Acrochordiceratidae
Eoacrochordiceras evolutum n. sp. Wang 1978
Eoacrochordiceras ziyunense n. gen., n. sp. Wang 1978
Preflorianitoides reniformis n. gen., n. sp. Wang 1978
Cephalopoda - Ceratitida - Cladiscitidae
Procladiscites simplex n. sp. Wang 1978
Cephalopoda - Ceratitida - Hedenstroemiidae
Pseudosageceras cf. multilobatum Noetling 1905
Cordillerites angulatus Hyatt and Smith 1905
Cephalopoda - Ceratitida - Xenoceltitidae
Xenoceltites sinuatus (Waagen 1895)
Xenoceltites ziyunensis n. sp. Wang 1978
Cephalopoda - Ceratitida - Longobarditidae
Hungarites yatesi Hyatt and Smith 1905
Cephalopoda - Ceratitida - Danubitidae
Eodanubites xinyuanensis n. gen., n. sp. Wang 1978
Eodanubites costulatus n. sp. Wang 1978
Cephalopoda - Ceratitida - Paragoceratidae
Isculitoides ziyunensis n. sp. Wang 1978
Isculitoides minor Tozer 1965
Isculitoides cf. ellipticus Chao 1959
Cephalopoda - Ceratitida - Khvalynitidae
Metadagnoceras sp. Tozer 1965
Metadagnoceras rotundum n. sp. Wang 1978
Metadagnoceras sinense n. sp. Wang 1978
Cephalopoda - Ceratitida - Procarnitidae
Procarnites kokeni (Arthaber 1908)
Procarnites ptychitoides n. sp. Wang 1978
Cephalopoda - Ceratitida - Japonitidae
Japonites sp. Mojsisovics 1893
Japonites ziyunensis n. sp. Wang 1978
Cephalopoda - Ceratitida - Gymnitidae
Japonites maduoensis (Wang and Chen 1976)
Cephalopoda - Ceratitida - Sturiidae
Ziyunites ziyunensis n. gen., n. sp. Wang 1978
Cephalopoda - Ceratitida - Albanitidae
Albanites guizhouensis Zhao and Wang 1974
Cephalopoda - Ceratitida - Proptychitidae
Proptychitoides sp. Spath 1930
Cephalopoda - Phylloceratida - Palaeophyllitidae
Leiophyllites variabilis (Spath 1934)
Eophyllites ziyunensis n. sp. Wang 1978
see common names

Geography
Country:China State/province:Guizhou
Coordinates: 25.8° North, 106.1° East (view map)
Paleocoordinates:9.0° North, 95.4° East
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Triassic Epoch: Early Triassic
Stage: Olenekian 10 m.y. bin: Triassic 1
Key time interval: Spathian
Age range of interval: 248.9 - 247.2 m.y. ago
Stratigraphy
Formation:Luolou
Stratigraphic resolution:bed
Stratigraphy comments: The ammonite layer is 10-20 cm thick (acquisition number AAN 14), which is located near the top of a unit of limestones in the Lower Triassic Luolou Formation, and is about 7 meters below a unit of sand and shale rocks in the overlying Middle Triassic Xinyuan Formation.
Lithology and environment
Primary lithology: lithified "limestone"
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:NIGPAS
Collectors:Y.K. Wang, Z.G. Zheng Collection dates:1963
Metadata
Database number:213532
Authorizer:A. Dunhill, M. Clapham Enterer:B. Allen, M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2020-09-04 04:00:45 Last modified:2020-09-04 10:20:52
Access level:the public Released:2020-09-04 04:00:45
Creative Commons license:CC BY
Reference information

Primary reference:
73747. Y. Wang. 1978. Ammonites at the end of the Early Triassic in Ziyun, Guizhou — with notes on the relationship between the Early and Middle Triassic ammonoids. Acta Palaeontologica Sinica 17:151-177 [A. Dunhill/B. Allen]