Late Cenozoic Ostracodes — Holden 
37 
anterior bluntly pointed at midheight; dorsum 
angled, with posterior and anterior sloping 
parts; greatest height in posterior half; surface 
smooth. In dorsal view: carapace compressed; 
terminally acuminate; greatest width at mid- 
length. 
dimensions: Specimen usnm 648784 (en- 
tire T-12: length, 0.53; width, 0.14; height, 
0.25. 
distribution: As fossil from T-12 (1 en- 
tire) . 
discussion. In general shape the present 
species approaches Paradoxostoma complanatus 
(Brady), 1880, from Kerguelen Island, South 
Indian Ocean. Both species possess a bluntly 
pointed caudal process, low height, and small, 
somewhat pointed anterior margin. But the 
Hawaiian species is more anteriorly inflated, has 
a concave venter, and is smaller. 
Paradoxostoma sp. B 
Figs. 27 a-b 
description: Carapace smooth, elongate. In 
lateral view: ventral and dorsal margins sub- 
parallel, converging slightly toward anterior; 
dorsal margin almost straight, gently convex; 
ventral margin straight at midlength, curving 
up posteriorly beneath poorly developed high 
caudal process, curving up more gradually an- 
teriorly to a blunt anterior margin. In dorsal 
view: carapace terminally acuminate, greatest 
width at middle; posterior sharply acuminate; 
anterior somewhat blunt. Duplicature wide, 
with greatest width postero ventral. 
dimensions: Specimen usnm 648785 (left 
valve) T-12: length, 0.69; width, 0.08; height, 
0.27. 
distribution: As fossil from T-12 (1 
valve) . 
discussion: The unusually straight dorsum 
and apparent lack of dentition are not character- 
istic of the genus Paradoxostoma , although the 
high caudal process and anteriorly narrowing 
carapace are. 
The collection consists of a single left valve 
in poor condition from station T-12. 
t 
Fig. 26. Paradoxostoma sp. A. a—b, Specimen usnm 648784; a, left valve lateral view showing overlap 
of right valve; b, dorsal view. 
