Geologij of the Loiuer MitcJtell River. 29 



At the summit of the limestone cliff overlooking the river we 

 found no ironstone. The rounded banks of the creek farther 

 from its mouth are covered with soil, but here and there the 

 limestone crops out, or shews in wombat holes round the base of 

 the hill up to the bridge. In addition, there are numerous 

 boulders of sandy ironstone containing veiy distinctly marked 

 fossil casts. These boulders continue from near the creek level 

 almost to the top of all the hills in the amphitheatre, with the 

 exception of the tall cliff at the e.xtreme south. When we first 

 saw the ironstone boulders we somewhat hastily concluded that 

 they contained miocene fossils similar to those gathered at Belle- 

 vue, and we commenced to break them up in order to enrich our 

 collection. To our surprise, however, we obtained instead a typical 

 eocene fauna, as will be seen from the following list of species, 

 determined: — 



Fossils from Boggy Creek. 



Bullinella, sp. Spondyliis pseiidoradula, McCoy 



Eoxania woodsii, Tate Hinnites corioensis, McCoy (prob.) 



Convis, sp. Pecten miir ray anus, Tate 



Volutilitlies antiscalaris, McCoy Modiola pueblensis, Pritchard 



Voluta maccoyii, T. Woods Glycimeris laticostata, Q. and G. 



Fasciolaria sp. Lhnopsis forskali, Adams 



Latirus murrayanus, Tate Cucvillaea corioensis, McCoy 



Lampusia woodsii, Tate Cardita polynema, Tate 



Lampusia annectans, Tate Cardivun victoriae, Tate 



Apollo prattii, T. Woods Meretrix submviltistriata, Tate 



Semicassis transenna, Tate Chione dimorphophylla, Tate 



Cypraea, two spp. Mactra liowchiniana, Tate 



Potamides semicostatuni, Tate Panopaea orbita, Hutton 



Turritella miirrayana, Tate Cuspidaria subrostrata, Tate 



Turritella tristira, Tate Magasella woodsiana, Tate 



Natica, sp. Flabellum gambierense, Dvmcan 



Emarginiila wannonensis, Harris Flabellum victoriae, Duncan 



Dentaliimi mantelli, Zittel Placotrochiis deltoideus, Dvmcan 



These fossils, or at least nearly all of them, are also common 

 in the prolific shell beds at Skinner's and Drier's (see post), 

 which we regard as on the same geological horizon as the 

 Bairnsdale limestone, the relative abundance of certain fossils in 

 the two sets of strata being chiefly due to altered sedimentary 

 conditions. Further reference to this matter will be made later 

 on. At Boggy Creek both strata are represented, the first by 

 the fossiliferous ironstone, and the second by the adjoining 

 calciferous rock. 



