84 E. 0. Teale: 



collected from various parts of this area, and numerous other col- 

 lections have been made by various meml^ers of tlie geological sur- 

 vey throughout Eastern Victoria. 



Of these occurrences, tlie best colliections have come from (1) Mat- 

 lock, (2) the Thomson-Jordan Valley. (3) the Black River Belt, 

 and (4) the Wellin^jton area. Ihese four localities consist of paral- 

 lel strips of Upper Ordovician rock, separated by belts of Silurian 

 sandstone and shale. The fossils show that these outcrops, if not 

 identical in horizon, are at any rate, very closely allied; and owe 

 their reappearance to successive intense folding along lines of 

 N.N.W. axes, resulting also in the folding of the overlying Silurian 

 rocks in a similar way. Subsequent denudation during the 

 present cycle of erosion has exposed some Ordovician as inliers. 

 They are generally narrow, elliptical Ix'lts, conforming to the 

 general strike, but disappearing along the strike under the Silurian, 

 often to reappear, however, at varying intervals along tliis line. 

 This is due mainly to a very general development of i^itch, some- 

 times north and sometimes south. This structui'e, conmion through- 

 out the older rocks of Victoria, has been clearly brought out in the 

 Wood's Point and Walhalla district by the excellent field work of 

 Mr. 0. A. L. Whit el aw and Mr. W. Baragwanath respectively. 



Up to the present no definite graptolite zones have been recog- 

 nised in the Upper Ordovician in Victoria. It is probable that the 

 vertical range in the Upper Ordovician is not so great, but it is 

 likely that systematc work would yield some definite results iu 

 favourable areas. 



The following is the complete lif^t of graptolites recorded from 

 the Wellington region : — 



Diplograptus foliaceus, Murchison. 



Diplograptus thielei, T. S. Hall. 



Diplograptus (Orthograptus) quadrimucronatus, J. Hall. 



Diplograptus (Orthograptus) calcaratus, Lapworth. 



Leptograptus flaccidus, J. Hall. 



Cliniacograptus wellingtonehsis, 1'. S. Hall. 



Climacograptus bicornis, J. Hall. 



Cliniacograptus bicoi'nis, var. tridentatus, Lapworth. 



Cliniacograptus tubuliferus, Lapworth. 



Dicellograptus elegans, Carruthers. ^ 



Dicellograptus morrisi, Hopkins. 



Dicellograptus gurleyi, Lapworth. 



Cryptograptus tricornis, Carruthers. 



