Llangynog Inlier


The Llangynog Inlier is a geologic formation that crops out in Wales, which mainly consists of volcaniclastic rocks and rhyolite, as well as dolerite, dacite and a layer of rhyolitic conglomerates. A recent study also managed to date the Inlier to between 566 and 563 Ma, which means it temporally correlates directly with the Fermeuse Formation of Newfoundland, the Beacon Hill Formation in the Charnwood Forest, and the neighboring Stretton Shale Formation in Long Mynd. It also preserves fossils dating back to the Ediacaran period.

Paleobiota

The Llangynog Inlier is that of a tidally active shallow marine environment that saw much volcanic activity. It also preserves a small collection of Ediacaran forms, from the discoidal Aspidella to the elongated Palaeopascichnus.

''incertae sedis''

GenusSpeciesNotesImages
Aspidella
Enigmatic discoidal fossil.
Ediacaria
  • Ediacaria sp.
    		• Enigmatic discoidal fossil, possibly a synonym of Aspidella.
    Hiemalora
  • Hiemalora sp.
    		• Discoid organism, possibly holdfasts of petalonamids.
    Palaeopascichnus
  • Palaeopascichnus sp.
    		• Palaeopascichnid organism.

    Ichnogenera

    GenusSpeciesNotesImages
    Sinusoidal trace
    • ???
    		A sinusoidal trace fossil, possibly a feeding trace of an unknown organism.