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Summary Full report
Lisdoo Townland pitTyrone
Site number:318File Number:H26
ESCC:ED
Locality Type:Pit Status: ASSI
Grid Reference: H28586137 Centroid
Google maps: 54.49978,-7.56009
County: TyroneCouncil area:Fermanagh & Omagh District Council
Period:Devonian
Stages:Famennian, Frasnian
Lithostrat:Fintona Group, Shanmullagh Formation (Form Blm)
Site Description
image: 0318a.jpg Lisdoo Pit, north-east of Irvinestown, Co.Tyrone, where green mudstones (with miospores) of the Shanmullagh Formation were exposed.
Lisdoo Pit, north-east of Irvinestown, Co.Tyrone, where green mudstones (with miospores) of the Shanmullagh Formation were exposed.
Description:
A temporary excavation (by hand) on the north side of this pit revealed about 1.9m of strata. While most of the strata consist of green laminated mudstones, discrete thin beds of medium to coarse-grained sandstone occur in the lower half of the section together with numerous flaser laminations of sandstone and siltstone throughout the mudstones. A total of 8 mudstone samples from this excavation were processed and 5 contained moderately preserved miospores. A comprehensive list of the miospores from this locality is as follows: Ancistrospora spp., Ancyrospora sp.?, Apiculiretusispora sp., A. fructicosa Higgs 1975, Aurorospora spp., Bascaudaspora sp., B. collicula (Playford) Higgs, Clayton and Keegan 1988, Biharisporites sp., Brochotriletes sp., Crassispora spp., Cristatisporites sp., Converrucosisporites spp., Densosporites sp., Densosporites sp. cf. D. devonicus Richardson 1960, Dictyotriletes spp., Dictyotriletes sp.B., Dictyotriletes sp.C., Emphanisporites spp., Emphanisporites sp.A., Emphanisporites sp.B., E. rotatus (McGregor) McGregor 1973, Hymenozonotriletes sp., Hystricosisporites sp.?, Lophozonotriletes sp., Raistrickia sp., Retusotriletes spp., Rugospora sp., Verrucosisporites spp.?, and V. scurrus (Naumova) McGregor and Camfield 1982.
Notes:
For general information and reference list on the Shanmullagh Formation with respect to miospore localities see Key Site 1151 - Shanmullagh Formation; Miospore localities.

For general information and reference list on the Shanmullagh Formation with respect to stratotype see Key Site 1150 - Shanmullagh Formation; Stratotype localities.

For general information and reference list on the Devonian System in N. Ireland see Key Site 1147 - The Devonian System in N. Ireland - Introduction.
Keywords
Rocks:Mudstone, Sand, Sandstone, Siltstone
Fossil Groups:Miospore, Miospores
Paleoenv:lacustrine
Access
Approach:5.75km northeast of Irvinestown.
References (2)
Clayton, G., Higgs, K. & Keegan, J.B., 1974. Late Devonian and Early Carboniferous occurrences of the spore genus Emphanisporites McGregor in Southern Ireland. Pollen et Spores, vol. 19 pt. 3, pp.415-425.
Higgs, K., Clayton, G. & Keegan, J.B., 1988. Stratigraphic and systematic palynology of the Tournaisian rocks of Ireland. Special Papers of the Geological Survey of Ireland, numb. 7, pp.1-93.
Map(s): GSNI (1982a) 1:50,000 Sheet 45 (Enniskillen);
GSNI (1982b) 1:50,000 Sheet 46 (Clogher);
O.S. 1:50,000 Sheet 18 (Enniskillen).
Record type: Environment Serv. GIS, ESCR report    
Entered by: Doughty, P.J.
 Enlander, I., Dempster, M. & Doughty, P., 2026. Lisdoo Townland pit, County Tyrone, site details. [In] Earth Science Conservation Review.
https://www.habitas.org.uk/escr/site.php?item=318. Accessed on 2026-11-06.

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