BUFFALO SOCIETY OF NATURAL SCIENCES 33 



tyckius dewalquei, Eurypterus, Spirorbis. Mr. Destinez found a 

 beautiful Ichthyolite which is probably new. We cite again: lamelli- 

 branchs, lingulas, ferns and Lepidodendron. That bed contains 

 sometimes thin layers of sandstones, on which one finds associated on 

 the same planes of stratification lingulas, lamellibranchs, ferns, and 

 ganoid scales. Mr. I. Braconier has collected excellent specimens 

 which demonstrate the certainty of this fact. 6 .... 



"In beds F, G, H, I, we have not collected any determinable 

 fossils; but in the lower part of bed J we have found vegetal matter, 

 scales of the fish, Holoptychius inflexus, a small species of Pterichthys 

 and the remains of a Dipterus as I have pointed out." (Fraipont, 



68, 55). 



A little lower in the series in bed B impressions have been found 

 which suggest those of rain-drops, also very numerous axes of vegetal 

 matter probably, as suggested by Mr. Mourlon, stipes of the fern 

 Palaeopteris hibernica, and in the same bed Mr. Destinez found a 

 large bone, belonging apparently to a fish. 



BALTIC ISLES AND RUSSIA 



Siluric. Upper Siluric of Gotland. The Baltic Isles have long 

 been famous for their Siluric sections which are so excellently shown 

 on Gotland. The lowest eurypterid horizon is found in the Pterygotus 

 marl of Gotland of Upper Siluric age. Although the sections in the 

 northern and southern parts of the island have been studied separately 

 and the correlations are not as yet complete, still one important 

 fact has stood out for the whole island: there is everywhere a great 

 break between the Lower and Upper Gotlandian (Siluric), indicating 

 in many places that there was at this time a retreat and a subsequent 

 advance of the sea. In the north around Visby, Hedstrom (113) 

 has recognized seven subdivisions of the Gotlandian. Beginning at 

 the base, the first bed to be shown along the shore is the Stricklandia 

 marl (I of Hedstrom), with Palaeocyclus as the characteristic fossil. 

 Then follows II, a marly limestone showing reef masses at intervals 

 and containing a Niagaran fauna. The succeeding beds (III) are 

 of particular interest to us. At the base are 3 meters of yellowish 

 grey limestone with crinoids, and then follow 16 meters of grey marls 

 interstratified with limestone, the upper 5 meters of which consist of 

 stratified limestones, oolitic at the base, but becoming gradually 

 coarser towards the top where they are conglomeratic, and where 



6 M. 1. Braconier a recueilli de superbes echantillons qui demontrent ce fait a l'evidence." 



