|Lisdoo Townland pit||Tyrone|
|Lisdoo Pit, north-east of Irvinestown, Co.Tyrone, where green mudstones (with miospores) of the Shanmullagh Formation were exposed.|
|Site Type: ||Pit|
|Site Status: ||PASSI|
|District: ||Omagh District Council|
|Grid Reference: ||H28586137|
|Rock Age: ||Devonian (Famennian, Frasnian)|
|Rock Name: ||Fintona Group, Shanmullagh Formation (Form Blm)|
|Rock Type: ||Mudstone, Sand, Sandstone, Siltstone|
|Fossil Groups: ||Miospore, Miospores|
|Other interest: ||No data, No Data, lacustrine|
Summary of site:
This site is important because it yielded 29 species of Devonian plant spores, allowing the age of these rocks to be firmly established.
A temporary excavation into a little under 2m of green, laminated mudstones and thin coarse grained sandstones near the base yielded fairly well preserved spores (of the 8 mudstones present, 5 were sampled).
Sites rich in spore floras are rare and this prolific site should be designated and protected.