124 - ON THE OCCURRENCE OF LEPIDODENDRON AT MT. LAMBIE, 



specimens were discovered in situ by us at a spot about half a 

 mile nearer to the Brachiopod Sandstone of Mt. Lambie than the 

 previous locality. This latter locality is distant only about one- 

 quarter of a mile in a direct line from what appears to be the 

 uppermost Marine Devonian Bed in that district. 



This horizon would be about, perhaps, 700 or 800 feet above 

 the top of the Marine Devonian Beds. Mr. C. S. Wilkinson 

 has stated elsewhere that he considered that the Lepidodendron 

 hoiizon approached within about 1000 feet of the top of the 

 Marine Devonian Rocks. 



So far, all the specimens found by us were large varieties four 

 or five to six inches in diameter, and probably all referable to 

 Lepidodendron australe. 



On the fourth day of examination we found an obscure cast 

 of Lepidodendron associated with Marine Devonian fossils in such 

 a position as to leave no doubt that the loose angular block in 

 which it was imbedded had rolled down from a horizon many 

 hundred feet below the level of the uppermost of the Spirifera 

 disjancta beds. The cast being an obscure one, it would probably 

 be impossible to determine the exact species of Lejndodendron to 

 which it belongs, though it certainly appears to be closely allied 

 to Lepidodendron australe^ if not identical with it. 



On the day before that on which we found the above specimen 

 near Mt. Lambie, Mr. Clunies Ross discovered a specimen of 

 " Lepidodendron australe " in a large block of Marine Devonian 

 Sandstone at the locality previously examined by him 16 miles 

 from Bathurst. The two discoveries were therefore made almost 

 simultaneously, and the results confirm one another, so that it 

 may be concluded that a Lejndodendron, probably L. australe, 

 extends downw^ards into the true Devonian rocks of Australia. 



The fact may be mentioned here that a species of plant appa- 

 rently allied to Lepidodendron, though its very imperfect state of 

 preservation renders its identity uncertain, was found by the 

 authors in situ in a bed of quartzite which must be at least a 

 thousand feet below the horizon of the uppermost Spirifera 



