Llanfallteg_Formation

Llanfallteg Formation

Llanfallteg Formation

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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]

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References

  1. [1]
    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.


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