Eucytherura anoda, Michael, 1995

Ayress, M. A., Whatley, R., Downing, S. E. & Millson, K. J., 1995, Cainozoic and from Recent Deep Sea Cytherurid Ostracoda the South Western Pacific and Eastern Indian Oceans, Part Cytherurinae, Records of the Australian Museum 47 (2), pp. 203-223 : 206-207

? Eucytherura anoda n.sp.

Fig. 2 E-G

Etymology. Latin, without swellings. Referring to the lack of nodosity of this species.

Type material and dimensions. Holotype, AMF 91143, adult right valve, length 0.20 mm, height 0.11 mm. Paratype: AMF 91144, adult left valve, length 0.22 mm, height 0.12 mm. Both specimens are from the type locality and horizon .

Type locality and horizon. Central Lord Howe Rise , present day water depth 1416 m, OSI cruise 12-87, core 13GClO, coretop, Recent .

Diagnosis.? Eucytherura with weakly inflated, wellrounded, elongate ovate carapace. Surface coarsely reticulate, fossae circular diminishing in size distally; anteriorly muri are concentrically aligned parallel to anterior margin. Arcuate ridge posterodorsally. Median hinge element slightly convex.

Description. Very small, subovate in lateral view. Anterior margin symmetrically convex; posterior margin strongly convex, apex at mid-height. Dorsal margin slightly undulating, gently sloping posteriorly. Ventral margin gently biconvex. Weakly calcified and weakly inflated, posteroventral margin compressed. Arcuate ridge posterodorsally. Surface coarsely reticulate, fossae circular, diminishing in size and increasing in density towards the free margins; anteriorly muri are concentrically aligned parallel to anterior margin. Adductor muscle scars large, four in a subvertical row anteroventral of valve centre, frontal scar subreniform, just ahead or dorso-median adductor scar; normal pores, simple and well distributed, internally emergent at base of large pits. Antimerodont hinge: finely crenulate median element; in RV, terminal elements finely denticulate, narrow and elongate, tapering under ends of median element. Inner lamella moderately broad anterioriy, with small crescentic vestibulum, narrow ventrally with narrow vestibulum. Few radial pore canals, 4-5 true anterioriy, 3 posteroventrally.

Comparisons. Differs considerably from the other species of the genus in its more uniform reticulation with circular fossae and weaker inflation. It lacks normal pore clusters and for this reason is only tentatively placed in Eucytherura .

Distribution. Known only from the type locality and horizon.