Cryptatrypa-Strophochonetes Comm., Nandan County, Northern Guangxi Province (Devonian of China)

Where: Guangxi, China (24.5° N, 115.6° E: paleocoordinates 2.0° S, 119.3° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Nandan Formation, Late/Upper Emsian (402.5 - 391.9 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; mudstone

• "Nowakia and goniatites pelagic, trilobites probably epibenthic. BA 4-5, desposited in relatively quiet-water, lower oxygen environment, as indicated by the thin-bedded, nonbioturbated strata."
• "beds consist of dark-colored, thin-bedded mudstone"

Collection methods: For complete list, see Xu (1979), Acta Palaeontologica Sinica 18(4):362-380 (table 1).

Primary reference: Y. Wang, A. J. Boucot, J.Y. Rong and X.C. Yang. 1987. Community paleoecology as a geologic tool: the Chinese Ashgillian-Eifelian (latest Ordovician through early Middle Devonian) as an example. Geological Society of America Special Paper 211:1-100 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 25758: authorized by Michael Foote, entered by Michael Foote on 24.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Orthida - Draboviidae
Muriferella pygmaea n. sp.
 Athyridida - Athyrididae
? Athyrisina sp.
 Atrypida - Glassiidae
"Cryptatrypa curvirostris n. sp." = Glassia
"Cryptatrypa curvirostris n. sp." = Glassia
 Spiriferida -
Costanoplia faceta
Strophomenata
 Strophomenida - Strophochonetidae
"Strophochonetes cf. filistriata" = Johnsonetes filistriata
"Strophochonetes cf. filistriata" = Johnsonetes filistriata Walcott 1884
 Strophomenida - Sowerbyellidae
Plectodonta sanglangensis
Cephalopoda
 Agoniatitida - Mimagoniatitidae
Mimagoniatites fecundus, Mimagoniatites bohemicus
Mimagoniatites fecundus Barrande 1865 ammonite
Mimagoniatites bohemicus Barrande 1865 ammonite
 Agoniatitida - Mimosphinctidae
"Convoluticeras discordans" = Mimosphinctes discordans
"Convoluticeras discordans" = Mimosphinctes discordans Erben 1965 ammonite
Given as "Conroluticeras" (evidently a misprint)
Tentaculita
 Nowakiida - Nowakiidae
Nowakia sp.
Nowakia sp. Gurich 1896
Trilobita
 Phacopida - Phacopidae
Plagiolaria nandanensis