Correlation of the Meadfoot and Siegenian Beds LO 
Atrypa reticularis Linné. 
Rhynchonella Pengelliana David- Rhynchonella papilio Krantz. 
son, pl. xii, figs. 8, 9. 
Rhynchonella sp. 
Streptorhynchus ES McCoy. 
Pl. xvi, figs. 2, 3. Stropheodonta gigas McCoy. 
fio. 4 4, Orthothetes ingens Drevermann. 
Streptorhynchus vel Leptaena sp.? Stropheodonta Sedgwicki Archaic 
(Leptaena? Loovensis David- and Verneuil. 
son), pl. xvii, figs. 18, 14. 
Orthis (vel Leptaena) laticosta 
Conrad. 
Orthis hipparionyx Vanuxem ? 
Pl. xvii, fig. 8, 9, 12. Proschizophoria personata (Zeiler). 
og. 10: P. provulvaria ? Maurer. 
fig. 11. Athyris avirostris Krantz. 
Later, other fossiliferous localities were discovered. Several 
lists of fossils have been published, but a great number of the 
identifications, based only on the already old descriptions of Phillips 
and Davidson, are doubtful. Thus, for instance, in the same list 
we find Spirifer speciosus and S. primaevus recorded together." 
The identifications which seem to have been made with most care 
are those of Green ? (1904-1906). From his lists we can add the 
following species to the above table: Dalmanella circularis, 
Proschizophoria provulvaria, Stropheodonta Murchison, Leptostrophia 
explanata, Rhenorensselaeria strigiceps, Camarotoechia dalerdensis, 
Spirifer hystericus, and Phacops Ferdinandi. All these species are 
found in the Ardennes. Corals and crinoids are abundant. From 
this list we may conclude that the fauna of the fossiliferous horizon 
of the Meadfoot Group and that of the Lower Hunsriickian of the 
Ardennes are identical.? 
Moreover, the fossiliferous beds of Devonshire consist of 
quartzoschistose rocks and sometimes calcareous rocks just as in 
the Ardennes, and they lie between two schistose horizons, of which 
the older contains intercalations of sandstone and quartzite. The 
same succession occurs in the Ardennes. Finally, both the Meadfoot 
Beds and the Siegenian rest on the purple and green shales of the 
Upper Gedinnian.* 
1 Hamling, Grou. Maa., 1909, pp. 133-4. 
2 Grou. Maa., 1904, p. 406; 1906, pp. 34-5. 
3 This opinion has been confirmed by a recent rapid examination of the 
pee from Looe and Fowey in the Sedgwick Museum, Cambridge, and 
the Geological Survey Collection at Jermyn Street, London. 
‘ This is not quite true of the western part of the Bassin de |’ Hifel, where 
the formations are much thicker. There exist between the red and green 
shales of the Gedinnian and the shales and quartzite of the Taunusian, two 
horizons: one consists of greenish shales (Schistes de St. Hubert) and the 
other of quartzophyHades and shales (Lower Taunusian). These two horizons 
disappear towards the east and in the neighbourhood of Laroche, at the south- 
western corner of the “‘ Massif de Stavelot’’, the red and green shales of the 
Gedinnian are succeeded immediately by the slates and. quartzites of the 
Taunusian. 
