| Llanfallteg Formation | |
|---|---|
| Stratigraphic range: Darriwilian PreꞒ Ꞓ O S D C P T J K Pg N | |
| Type | Formation |
| Lithology | |
| Primary | Siltstone, Tuff |
| Location | |
| Region | England, Wales |
| Country |  United Kingdom |
The Llanfallteg Formation is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period. It predominantly consists of ash containing siltstones, as wells as ash fall deposits and tuffs. It likely dates to the Darriwilian based on graptolites. The local graptolite fauna includes Didymograptus artus and Glossograptus armatus. The local trilobite fauna includes agnostids, phacopids and asaphids.
See also
References
- Legg, David A.; Hearing, Thomas W. (September 2015). "A late surviving xenopod (Arthropoda) from the Ordovican [sic] Period, Wales". Geological Magazine. 152 (5): 942–948. doi:10.1017/S001675681400065X. ISSN 0016-7568.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
 | This article about a specific stratigraphic formation in the United Kingdom is a stub. You can help Misplaced Pages by expanding it. |
 | This article related to the Ordovician period is a stub. You can help Misplaced Pages by expanding it. |
 | This England-related article is a stub. You can help Misplaced Pages by expanding it. |