BRACHIOPOD FAUNA OF THE KOKOAMU GREENSAND (OLIGOCENE), NEW-ZEALAND

Fourteen species of articulate brachiopods (the so-called Liothyrella landonensis fauna of Thomson 1926) are recorded from the late Oligocen e (Duntroonian) Kokoamu Greensand, an extensive and generally thin bla nket of highly glauconitic, fine to medium-grained sandstone covering some 3000 km2 of the North Otago - South Canterbury region of the east ern South Island, New Zealand. Two new genera, Landonella and Praemaga dina, and three new species, Landonella laqueiformis, Praemagadina cam pbelli, and Magadina squiresi, are described. Liothyrella landonensis Thomson, 1918 is reassigned to the genus Acrobrochus Cooper, 1983. The diagnostic criteria and taxonomic composition of die Family Terebrate llidae King, 1850 as defined by Elliott & Hatai (1965) are re-evaluate d. The diagnostic criteria of the Subfamily Anakineticinae Richardson, 1991 are critically appraised; a revised diagnosis for the Subfamily Anakineticinae is introduced. The Subfamily Terebratellinae King, 1850 is retained; the Subfamily Neothyridinae Allan, 1940 is abandoned as taxonomically unsound. The new Subfamily Stethothyridinae is introduce d. The distribution and relative abundance of the more commonly occurr ing brachiopods in the Kokoamu Greensand at five localities are quanti fied.