Llanfallteg Formation
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.[1]
| Llanfallteg Formation Stratigraphic range: Darriwilian | |
|---|---|
| Type | Formation |
| Lithology | |
| Primary | Siltstone, Tuff |
| Location | |
| Region | England |
| Country |  |
References
- Legg, David A.; Hearing, Thomas W. (September 2015). "A late surviving xenopod (Arthropoda) from the Ordovican Period, Wales". Geological Magazine. 152 (5): 942โ948. doi:10.1017/S001675681400065X. ISSN 0016-7568.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 8 July 2014.
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