Trythall,R.J.B.

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
Micrhystridium	Micrhystridium acum	Wales	Llandeilian
Coryphidium	Coryphidium bohemicum	Wales	Llandeilian
Frankea	Frankea hamata	Wales	Llandeilian
Veryhachium	Veryhachium horridum	Wales	Llandeilian
Frankea	Frankea longiuscula	Wales	Llandeilian
Arbusculidium	Arbusculidium filamentosum	Wales	Llandeilian
Orthosphaeridium	Orthosphaeridium quadrinatum	Wales	Llandeilian
Stelliferidium	Stelliferidium sp	Wales	Late Llanvirnian	Llandeilian
Veryhachium	Veryhachium sp.A Turn.,1985 sp. nov.	Wales	Late Llanvirnian	Llandeilian
Aremoricanium	Aremoricanium rigaudiae	Wales	Late Llanvirnian
Navifusa	Navifusa sp	Wales	Late Llanvirnian
Dasydorus	Dasydorus sp	Wales	Late Llanvirnian
Micrhystridium	Micrhystridium inconspicuum	Wales	Late Llanvirnian
Arkonia	Arkonia tenuata	Wales	Late Llanvirnian
Striatotheca	Striatotheca frequens	Wales	Late Llanvirnian	Early Caradocian
Stellechinatum	Stellechinatum celestum	Wales	Late Llanvirnian	Early Caradocian