Author:
Trythall,R.J.B.;Eccles,C.;Molyneux,S.G.;Taylor,W.E.G.
Year:
1987
Title:
Age and controls of Ironstone deposition (Ordovician) North Wales.
Reference:
Trythall,R.J.B. et al. (1987) Age and controls of Ironstone deposition (Ordovician) North Wales. Geological Journal Vol. 22 P. 31- 43
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Genus Species Country(Region) From To
Adorfia Adorfia sp Wales Early Caradocian
Arbusculidium Arbusculidium filamentosum Wales Llandeilian
Arbusculidium Arbusculidium gratiosum Wales Llandeilian
Aremoricanium Aremoricanium rigaudiae Wales Late Llanvirnian
Arkonia Arkonia tenuata Wales Late Llanvirnian
Arkonia Arkonia virgata Wales Llandeilian
Barakella Barakella fortunata Wales Llandeilian Early Caradocian
Coryphidium Coryphidium bohemicum Wales Llandeilian
Dasydorus Dasydorus sp Wales Late Llanvirnian
Dicrodiacrodium Dicrodiacrodium sp Wales Llandeilian Early Caradocian
Frankea Frankea hamata Wales Llandeilian
Frankea Frankea hamulata Wales Early Caradocian
Frankea Frankea longiuscula Wales Llandeilian
Goniosphaeridium Goniosphaeridium sp Wales Llanvirnian Early Caradocian
Marrocanium Marrocanium simplex Wales Llandeilian Early Caradocian
Micrhystridium Micrhystridium acum Wales Llandeilian
Micrhystridium Micrhystridium inconspicuum Wales Late Llanvirnian