OSTRACODS FROM SOME QUEENSLAND TERTIARY BASINS. 101 
Localities and Age: In The Narrows Tertiaries: Bores 1, 3, 4, 5, 6, 
12, 13, 14 (see species occurrence charts), parishes of Targinie and 
Bundle, county of Deas Thompson, between Gladstone and Rockhampton. 
This species has a proved vertical range of 198 feet, and its actual range 
may be considerably greater. In the Petrie Series: Brecknell’s Bore at 
somewhere between 60 and 178 feet, subdivision 10 of portion 222, parish 
of Warner, county of Stanley, near Strathpine, between Brisbane and 
Petrie; Houghton’s Bore, at about 45 feet, portion 24, parish of Warner, 
near Lawnton; from Simpson’s well, portion 186, parish of Nundah, 
county of Stanley, near Bald Hills, between Brisbane and Petrie. 
Probably Miocene. 
Genus Cyprinotus Brady, 1886. 
Genotype: Cyprinotus cingalensis Brady, 1886, p. 301. 
Diagnosis: Carapace in lateral view oval to broadly reniform, 
highest generally at about, or slightly behind, middle. Height consider- 
ably greater than one-half of length. Dorsal margin strongly arched. 
Ventral margin almost straight. Carapace valves rather compressed. 
Valves unequal, left overlapping right anteriorly, posteriorly, and 
usually ventrally, and right sometimes overlapping left dorsally. Free 
edges of left valve smooth, with chitinous border broader anteriorly and 
posteriorly than ventrally. Inner margin of right valve thickly 
tuberculate. 
Range: No Tertiary representative of this recent freshwater genus 
appears to have been recorded previously. 
Cyprinotus punctatus, sp. nov. Plate VI, figs. 4 a, b. 
Holotype: F. 1978, Queensland Geological Survey Collection. 
Locality: Bore 1, at 157 feet. Parish of Rundle, County of Deas 
Thompson, Queensland. Geological Horizon : The Narrows Tertiaries. 
Description: Carapace large, in lateral view ovate to broadly 
subreniform, highest slightly behind middle. Height approximately 
equal to two-thirds of length. Dorsal margin strongly arched, sloping 
more abruptly anteriorly than posteriorly. Ventral margin almost 
straight to slightly concave in median region. Anterior extremity broadly 
but rather obliquely rounded. Posterior extremity broadly and more 
bluntly rounded. Valves moderately convex to rather compressed. 
Convexity regular. Valves unequal, left overlapping right along ventral 
margin and two extremities. In profile narrow oblong-ovate, with 
anterior extremity somewhat more pointed than posterior, and greatest 
width slightly behind middle. Surface of valves polished, smooth except 
for numerous minute punctations representing closely-spaced normal 
pore canals. Marginal zone developed along ventral margin and tw r o 
extremities. Line of concrescence coinciding with inner margin, and 
running generally parallel to outer margin of shell. Marginal zone 
strongly chitinised and transparent, ranging in width to 0.1 mm., pierced 
by numerous radial pore canals opening internally along line of 
concrescence, externally near outer margin of shell. Radial pore canals 
closely spaced, about 0.01 to 0.02 mm. apart, sometimes in two or more 
series, long and short alternating, unbranched, narrow, each with bulbous 
enlargement near middle or between middle and outer margin. Shell 
thin to thick, chitino-calcareous, and transparent to opaque. 
