nV W. X. BENSON, W. S. DUN, AND W. R. BROWNE. 289 



to tlie east at au angle of about 3U° . The rock appears to consist in some parts 

 of a butt' ealcarecus sandstone, calcareous tuff, and more abundantly of limestone, 

 with disseminated portions of calcareous spar, principally due to 

 fragments of crinoidea. At a lower part in the same rock less compact, I found 

 a beautiful ehalcedonic cast, apparently of a terehra' (Loxonemaf) ; ''the cal- 

 careous sandstone .... contained fragments of shells of the liitorina or 

 turbo" (Macrocheilus filosa). ''We encamped on the 'Nammoy' or Peel river at 

 the foot of a small hill named 'Perimbungay.' In the left bank of the river 1 

 found a conglomerate-rock consisting of waterworn fragments of serpentine and 

 trap cemented b\ calcareous spar." "The range we had crossed at Turi was near 

 us to the westward and a conical hill called 'Uriary' in the direction of Turi, was 

 the most prominent feature to the south-east. The Peel continued its course 

 through this range which presented a more defined and elevated outline where it 

 continued beyond the river." 



In 1852, the Rev. W. B. Clarke, visited this area (10) and recognised the 

 I'elationship of the marine beds with those elsewhere in the Colony. "In my 

 report of September 6, 1852,'' he says, "I stated my opinon that there is a 

 regular sequence of the various beds of this formation over the Lepidodendron 

 beds of the Manilla and Goonoo Goonoo. I have now to show that the middle 

 beds of this formation, those of the Hunter and Hawkesbury, are widely distri- 

 buted in the western border of the countrj' between New England and the in- 

 terior. Sir T. L. Mitchell in 1831 found strata having the usual strike and 

 dip of the region and bearing fossils which evidently belong to similar roc'js 

 which I have founJ abundant in similar remains at the base of the Carboniferous 

 on the Paterson and Hunter, and more recently I have obtained from the same 

 neighbourhood near the junction of the Peel and Namoi rivers other fossils 

 which are identical with specimens coming from WoUongong jn the Illawarra, 

 where they occur in beds that pass in ascending order into the coal-bearing grits 

 and sandstones of the Wollondilly and Hunter River basins." 



About the years 1888-90, Mr. Donald Porter collected a number of fossils 

 from here which were transferred to the Australian Museum and to the Mining 

 Museum, and in Ihe following year Stonier (11) remarks that at Somerton the 

 marine beds "appear to belong to two distinct series which are unconformablo, 

 and may perhaps belong to the Upper and Lower Marine. The evidence is not 

 conclusive, nor are the sections sufficiently clear to establish the uneonformiiv 

 without a detailed survey." Mr. Etheridge (12), in the same year, accepted, 

 with some doubt, the correlation of these beds with the Upper Marine Series, a 

 correlation which was abandoned in the following year when a more extensive 

 study of the fossils had been made (13) . No further field studies were made of 

 this region for a long time, except the visits of Mr. Pittman (6) and Mr. 

 Andrews (7), })ut large series of fossils were obtained by Messrs. Porter, 

 Musson, Pittman and Cullen, which were in part described by Mr. Etheridge (14, 

 15), and have also been studied by Mr. Dun and the writer in the present paper. 

 These have been supplemented by collections obtained from the south-eastern 

 portion of the parish of Babbinboon by Mrs. Scott and the writer. Hers, 

 adjacent to portion 14 of the Parish, there is a low hill capped with a horizontal 

 layer of fine-grained limestone, beneath which is a calcareous and tuttaceous mud- 

 stone with abundant fossils. The following is the list up to the present date of 

 the fossils recognised in the region contained l)etween Carroll, Babbinboon, Mt. 



