On the Paleontology of County Dublin. 169 
Dublin, between Militown and Clonskea on the banks of the 
river Dodder, at several places near Rathgar and Rath- 
farnham, Kimmage, Crumlin, Goldenbridge, &c. Clondalkin 
and Lucan, all south of the river Liffey; and at Killester 
railway cutting and quarry, south of Finglas, quarries and 
cuttings at Blanchardstown, east and south of the village, on 
the north side of the river Liffey. All these are more or less 
fossiliferous localities, considered by the officers of the Geological 
Survey* to belong to the Upper Limestone (“Calp” of Sir Richard 
Griffiths), although the Paleontological evidence affords no 
grounds for such division. Quarries at Castleknock a little 
south of the village, and in the townland of Mitchelstown, three 
miles N.N.W. of Finglas, at Cloghran, Dunsink, north of Cappoge, 
the large quarries at Saint Doulagh’s, rocks on shore near Howth 
Lodge, and quarry to the south, near the Deer Park, are all] in 
compact Lower Limestone, usually containing a large assemblage 
of fossils. At Balscaddan Bay, north of Howth Harbour, are 
Lower Limestone shales. These lower beds, consisting of dark 
earthy limestone and shales, are highly fossiliferous. On the 
shore south-east of Malahide similar strata appear, the low clifis 
containing an abundance of corals, crinoids, and brachiopods. In 
some beds near the second Martello tower from Malahide, bunches 
of coral, Lithodendron gunceum, may be seen attached to a large 
bivalve shell, Plewrorhynchus fusiformis ; other beds are full of 
Spirifera bisulcata, Athyris planosuleata, &e. 
The old quarries inland—at Seamount, south of Malahide, and 
Feltrim to the south-west—have furnished a large number of 
species, Still further north, near the northern boundary of 
Sheet 102 Geological Survey Map, a little south of Skerries, a 
large quarry in the Lower Limestone has also yielded many 
fossils, amongst them being the large and beautiful univalve shell, 
Platyschisma (Turbo) tiara, a fossil which has also lately been 
collected by Captain Bennett, at Howth quarry, and Clare, Co. 
Kildare. 
The following is a list of the quarries and other places in the 
County of Dublin where LOWER CARBONIFEROUS LIMESTONE 
fossils have been observed.t These localities are numbered, 
+ Explanation of Sheets 102 and 112, Geological Survey yf Ireland, 1861, p. 7. 
t Ibid, p. 14, &e, 
