Cwm Rhiwarth Formation
83 distinct taxa, from 191 fossil occurrences the Paleobiology Database records under this name, spanning 458–455 Mya.
Wales, Walers, England · UK
83 taxa · 191 fossils · 458–455 MyaMembers recorded: Upper, Lower.
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1 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Brongniartella
- Bicuspina
- Broeggerolithus broeggeri
- Brongniartella minor
- Crinoidea
- Cyrtolites
- Orthoceras
- Tallinnella
- Broeggerolithus
- Bryozoa
- Colaptomena expansa prolata
- Howellites
- Kiaeromena (Kiaeromena) kjerulfi
- Leptaena
- Leptaena ventricosa
- Lophospira
- Basilicus
- Broeggerolithus nicholsoni
- Colaptomena expansa
- Dalmanella horderleyensis
- Dinorthis berwynensis angusta
- Flexicalymene caractaci
- Flexicalymene planimarginata
- Kjaerina
- Kjaerina hedstroemi
- Kjaerina jonesi
- Paracraniops
- Sowerbyella
- Bellerophontidae
- Conolichas
- Dalmanella
- Dinorthis berwynensis
- Dinorthis flabellulum
- Dolerorthis duftonensis prolixa
- Eoplectodonta
- Favosites
- Kjerulfina
- Kloucekia apiculata
- Lingulella
- Onniella
The 40 most often recorded, of 83.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.