Abstract Nine brachiopod species are described from limestone at the top of the Nemo Formation, Wether Hill Station, near Ohai, South Island, New Zealand. Capillonia brevisulcus (Waterhouse) and Spinomartinia spinosa Waterhouse indicate that the fauna belongs to the Spinomartinia spinosa Zone. One brachiopod species, Tomiopsis isbelliformis, is new. The Nemo and other correlative faunas of this zone are analysed and their species and biomass compared. It is shown that the Nemo assemblage probably developed in shallow water shelf conditions, at depths slightly greater than a northern Takitimu occurrence, but less than the assemblages of the Kuriwao and Arthurton Groups, and much less than the extensive and correlative Atomodesma trabeculum Zone.
Summary Series in the Triassic were introduced by Marwick (1951) “largely [for] …mapping requirements”, a grouping of several stages being a more mappable unit than a single stage, especially on small scale maps. The decision of the New Zealand Geological Survey to use series as the units in the 4-mile mapping project bears out the usefulness of these units.
Abstract A new local stage, the Malakovian, is proposed for the beds containing early Triassic marine faunas (Scythian) in New Zealand. A table listing the characteristic fossils of all the present series and stages of the New Zealand Triassic beds is appended.
Abstract Upper Jurassic sediments are preserved in a narrow infaulted outlier extending north-eastwards from the Barrier River, and to the west of the Livingstone Fault. Belemnopsis of the aucklandica (Hochstetter) group, probably of Puaroan age, is recorded from these sediments exposed in the Barrier River. The distribution of Upper Jurassic belemnites in the South Island is discussed, and four new occurrences from North Canterbury are recorded: Belemnopsis sp. indet. and Hibolithes aff brownei (Marshall) from the Hurunui River; Belemnopsis aucklandica from the Okuku River; and Belemnopsis ex gr. aucklandica from Gorge Stream, a tributary of the Waiau River.
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