Where: Thailand (13.8° N, 100.5° E: paleocoordinates 0.7° N, 136.9° E)
• coordinate based on nearby landmark
• basin-level geographic resolution
When: Emsian to Emsian (407.6 - 387.7 Ma)
• "...shales of similar age as the Viriatellina-bearing limestone from the NW of Thailand...According to the biostratigraphical position of closely related species in Europe these strata can be assumed to be of Emsian to Eifelian age."
Environment/lithology: basinal (); shale
• "The Silurian and Early Devonian rock sequence of Northern Thailand was formed in an area of marine sedimentation extending from Malaysia, Burma, and Thailand to Southern China, probably not surpassing 200 m in thickness. Whereas the Silurian mainly consists of fine clastics with local chert and limestone intercalations, the Lower Devonian is characterized by prevailing cherts, graptolite bearing black shales, limestones and minor amounts of sandy material. Due to complicated tectonics and thick vegetation so far continuous sections of these strata have not been spotted in Thailand." [NB localities 1, 2, and 13 are in western rather than northern Thailand, but it seems to be implied that these deposits are geologically related to those in the northwest.]
•SEP environmental call based on given info: NOTE this unit may be Permian
• "...shales..."
Primary reference: H. Bastin, E. von Braun, A. Hess, K.-E. Koch, V. Stein, D. Stoppel, and R. Wolfart. 1977. Thailand. In A. Martinsson (ed.), The Silurian-Devonian boundary (IUGS, Series A, Number 5) 238-244 [M. Foote/M. Foote/M. Uhen]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 13996: authorized by Michael Foote, entered by Michael Foote on 07.05.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
• "[Early Devonian] deposits mainly composed of conodonts resp. tentaculitids in limestones and of phosphatic-shelled brachiopods, graptolites, and conodonts in black shales."
Show authors, comments, and common names
| Tentaculita |
| Nowakiida - Nowakiidae |
|
| Styliolinida - Styliolinidae |
|