Where: Guizhou, China (25.9° N, 105.4° E: paleocoordinates 26.9° N, 87.4° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Lower Member (Xiaowa Formation), Tuvalian (232.0 - 221.5 Ma)
• 12 m thick, previously known as Wayao Member of Falang Formation or as Wayao Formation
•JA: originally entered as Carnian; the Metapolygnathus polygnatiformis and M. nodosus zones are both Tuvalian according to Lucas et al. 2012
• group of beds-level stratigraphic resolution
Environment/lithology: deep-water; lithified shale and lithified marl
Size class: macrofossils
Collection methods: quarrying, mechanical,
Primary reference: C. Li and O. Rieppel. 2002. A new cyamodontid placodont from Triassic of Guizhou, China. Chinese Science Bulletin 47(5):403-407 [M. Carrano/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 85166: authorized by Wolfgang Kiessling, entered by Uta Merkel on 04.12.2008, edited by Bethany Allen
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Craniata | |
? Crania sp.2 Retzius 1781 | |
Bivalvia | |
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Cephalopoda | |
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"Clionites cf. zeilleri" = Clionitites2
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Protrachyceras cf. douvillei2, Protrachyceras longiangense2, Protrachyceras costulatum2, Protrachyceras ladinum2, Protrachyceras deprati2, Paratrachyceras cf. hofmanni2, Trachyceras sinensis2, Trachyceras cf. aon2, Trachyceras multituberculatum2
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Conodonta | |
"Metapolygnathus nodosus" = Hayashiella nodosa2, "Metapolygnathus polygnathiformis" = Paragondolella polygnathiformis2
"Metapolygnathus polygnathiformis" = Paragondolella polygnathiformis2 Budurov and Stefanov 1965 conodont | |
Reptilia | |
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Cyamodus orientalis n. sp.3 Wang et al. 2019 placodont Zhejiang Museum of Natural History, Hangzhou, ZMNH M8820 (holotype), "an articulated and nearly complete skeleton with three-dimensionally preserved skull and lacking only the forelimbs, representing an adult individual based on overall body size"
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Psephochelys polyosteoderma n. gen. n. sp.
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"Ghuizhouichthyosaurus tangae" = Guizhouichthyosaurus tangae2, "Guanlingichthyosaurus liangae" = Guanlingsaurus liangae2
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Odontochelys semitestacea n. gen. n. sp.1
Odontochelys semitestacea n. gen. n. sp.1 Li et al. 2008 turtle IVPP V 13240 (paratype), V 15639 (holotype), V 15653
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Crinoidea | |
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Holothuroidea | |
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