Where: China (25.6° N, 106.6° E: paleocoordinates 15.1° N, 95.4° E)
• coordinate estimated from map
• hand sample-level geographic resolution
When: Xinyuan Formation, Middle Triassic (247.2 - 237.0 Ma)
Environment/lithology: basinal (siliceous); lithified, gray, muddy chert
•The microtextural component consists of radiolarian particles and sponge spicules, enclosed in fine-grained material with particle-matrix or matrix-particle texture. Together, radiolarian particles with polycrystalline quartz texture and sponge spicules made up of single crystals of quartz comprise 30-40% of the rock. The radiolarians and sponge spicules are evenly scattered in the matrix. The matrix consists mainly of clay minerals, organic matter and volcanic glass, with a few fragments of microcrystalline calcedony.
Size class: microfossils
Primary reference: X. Wenchen and Z. Ning. 2000. Middle Triassic Radiolaria from turbudites in Ziyun, Guizhou South China. Micropaleontology 46(1):73-87 [J. Pálfy/A. Kocsis]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 131101: authorized by József Pálfy, entered by Adam Kocsis on 19.07.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Protozoa | |
Pseudostylosphaera japonica Nakaseko and Nishimura 1979 radiolarian
Pseudostylosphaera compacta Nakaseko and Nishimura 1979 radiolarian | |
Eptingium manfredi Dumitrica 1978 radiolarian | |
"Triassocampe cf. nova" = Japonocampe nova
"Triassocampe cf. nova" = Japonocampe nova Yao 1982 radiolarian | |
Hozmadia sp. Dumitrica et al. 1980 radiolarian
Hozmadia reticulata Dumitrica et al. 1980 radiolarian
Hozmadia cf. reticulata Dumitrica et al. 1980 radiolarian
Poulpus cf. phasmatodes De Wever 1979 radiolarian | |
Deflandrecyrtium sp. Kozur and Mostler 1979 radiolarian | |
Goestlingella cf. illyrica Kozur 1984 radiolarian | |
Canoptum "sp. B", Canoptum pessagnoi n. sp.
Canoptum "sp. B" Pessagno et al. 1979 radiolarian
Canoptum pessagnoi n. sp. Wenchen and Ning 2000 radiolarian | |
Yeharaia cf. annulata, Yeharaia "sp. A", Yeharaia "sp. B", Triassocampe sp., Triassocampe deweveri, Triassocampe hunanensis n. sp., Triassocampe scalaris, Triassocampe sulovensis, Ruesticyrtium longum
Yeharaia cf. annulata radiolarian
Yeharaia "sp. B" Nakaseko and Nishimura 1979 radiolarian
Triassocampe sp. Dumitrica et al. 1980 radiolarian
Triassocampe deweveri Nakaseko and Nishimura 1979 radiolarian
Triassocampe hunanensis n. sp. Wenchen and Ning 2000 radiolarian
Triassocampe scalaris Dumitrica et al. 1980 radiolarian
Triassocampe sulovensis Kozur and Mock 1981 radiolarian | |
Silicarmiger sp. Dumitrica et al. 1980 radiolarian | |
Lithomelissa cf. panus radiolarian
Lithomelissa "sp. A" Ehrenberg 1847 radiolarian | |
Xipha cf. pessagnoi radiolarian | |
| |
Gorgansium sp. Pessagno and Blome 1980 radiolarian
Gorgansium cf. thayeri Yeh 1989 radiolarian
Betraccium deweveri Pessagno and Blome 1980 radiolarian | |
Sarla sp. Pessagno et al. 1979 radiolarian | |
Stylosphaera sp. Ehrenberg 1847 radiolarian | |
? Emiluvia cochleata radiolarian
Emiluvia sp. Foreman 1973 radiolarian |