114 
PROCEEDINGS OF THE ROYAL SOCIETY OF QUEENSLAND. 
Feet. 
Cypris 
rnunduranensis. 
Ilyodromus ? 
concentricus. 
Cyprinotus 
punctatus. 
Erpetocypris 
aequalis. i 
Erpetocypris ? 
subtriangitiaris . 
Cypridopsis 
linearis. 
76 
C 
R-C 
Bore XII. 
R 
R 
92 
R-C 
R 
115 
C 
C 
R 
R 
138 
C 
R-C 
. . 
164 
C 
R 
R 
R 
R 
185 
C 
R 
R 
. . 
204 
C 
R 
211 
c 
R 
R 
232 
R 
, f 
258 
C 
R 
261 
C 
R 
274 
C 
R 
R 
296 
C 
R 
78 
R 
VR 
Bore XIII 
VR 
R 
124 
R 
R 
R 
R 
127 
C 
R 
R 
R 
133 
c 
VR 
R-C 
R 
. , 
143 
c 
R 
R 
R 
VR 
205 
R 
. . 
, , 
246 
R 
R 
R 
256 
R 
. , 
269 
C 
R 
R 
284 
C 
R 
64 
R 
Bore XIV 
R 
70 
C 
VR 
74 
R 
VR 
R 
79 
C 
R-C 
R 
100 
C 
VR 
123 
C 
. . 
R 
R 
135 
R 
VR 
R 
140 
C 
R 
147 
C 
R 
R 
VR 
150 
C 
R 
R 
154 
C 
R 
162 
R 
R-C 
R-C 
176 
R 
R 
R 
205 
VR 
R 
215 
C 
R-C 
R 
. , 
261 
€ 
R-C 
Zonal Correlations. 
From a study of the above species occurrence charts it will be seen 
that the vertical range of Ilyodromus ? concentricus is approximately 
115 feet. Although in Bores III, XIII, and XI Y the proved vertical 
range of this species is, respectively, only 61, 65, and 76 feet, it is 
apparent that these figures do not represent the complete range, since 
only widely-spaced and relatively small samples from these bore-cores 
were available for study. In all of the other bores the vertical range 
approximates to, but does not exceed, 115 feet. From this general 
persistence a broad zone, some 115 feet in thickness, has been set up. It 
has been called the Zone of Ilyodromus f concentricus. 
