List of fossiliferous stratigraphic units in Northern Ireland

Group or Formation ! Period ! class="unsortable"\| Notes
class="wikitable sortable" style="width: 100%;"
Bardahessiagh Formation	Ordovician
Blackstokes Limestone Formation	Carboniferous
Blackwater Limestone Formation	Carboniferous
Carrickaness Sandstone Formation	Carboniferous
Chalk Marl Formation	Cretaceous
Glauconitic Chalk Formation	Cretaceous
Glencar Formation	Carboniferous
Killey Bridge Formation	Ordovician
Lias Formation	Jurassic
Lias Group/Waterloo Mudstone Formation	Jurassic
Limehill Beds Formation	Silurian
Maydown Limestone Formation	Carboniferous
Pernarth Group/Westbury Formation	Triassic
Tirnaskea Formation	Ordovician
Waterloo Formation	Jurassic
White Limestone Formation	Cretaceous

References

{{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021}}

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