DESCRIPTION OF A LIMESTONE OF LOWER MIOCENE AGE, 281 
DESCRIPTION oF a LIMESTONE or LOWER MIOCENE 
AGE FRom BOOTLESS INLET, PAPUA. 
By FREDERICK CHAPMAN, A.L.S., F.R.M.S., etc., 
Palzontologist to the National Museum, Melbourne. 
With Plates VII, VIII, and IX. 
(Communicated by W. 8. Dun.) 
[Read before the Royal Society of N. S. Wales, October 7, 1914.] 
1. Introduction. 
No) 
2. Note on the Bearing of the Foraminiferal Limestones upon 
the Occurrence of Petroleum Fields. 
3. Detailed Description of the Limestones. 
a 
. Summary. 
1. Introduction. 
THE rock specimens from the above locality, for the examin- 
ation of which I am indebted to my friend Mr. W. 8. Dun, 
of Sydney, have an important bearing on the geology of 
Papua. The limestone is in fact, a very fine example of 
a foraminiferal rock denoting a definite horizon in the 
Cainozoic system. The specimens were collected at 
Bootless Inlet, Papua, by Mr. J. H. Carne, F.G.S., during 
his recent geological explorations in search of petroleum- 
bearing beds. 
The present occasion seems to be the second on which 
Cainozoic fossils belonging to a definite horizon have been 
obtained from Papua, the first being the determinations 
made by C. S. Wilkinson in 1876.* That author then 
recorded Voluta macroptera, Volutilithes anticingulatus 
and several other genera of mollusca from the blue clays of 
Hall’s Sound, Papua, and which he regarded as common 
* Proc. Linn. Soc. N.S. Wales, Vol. 1, pt. 2, 1876, pp. 114, 115. 
