Triassic marine ostracodes of the Australian margin (Holes 759B, 760B, 761C, 764A, and 764B)

Abstract

Sixty-five species of benthic ostracodes have been discovered in the Triassic sediments. Known species were found in the samples studied from the upper Norian-Rhaetian at Holes 759B and 760B and from the Rhaetian at Holes 761C, 764A and 764B. A large part of material of the recovered ostracodes belong to taxa that are related to ostracodes described in the Tethyan province. Seven species are known from northwestern Europe and five from Iran. Ogmoconcha and Rhombocythere, which are stratigraphically important genera in northern Europe, extend into the Tethyan province. Species of Ogmoconcha are present in Holes 760B, 764A and 764B. The highly ornate bairdiids of the Alpine Tethyan province are dominant in Hole 761C. The affinities with the fauna of Iran noted by Kristan-Tollmann are corroborated by the presence of the genera Mostlerella, Hiatobairdia, and other bairdiids. -Authors