Echinoderma: The following have been identified by Dr. H. B. Fell (1952 and 1956): Ophryaster novaezelandiae Fell (Omihi, Canterbury) Hippasteria antiqua Fell (Omihi, Canterbury) “Cidaris”? (Cyathocidaris) pistillum Quenstedt (Pariwhakatau Creek mouth) Vertebrata: The following Elasmobranchii were recorded by Chapman (1918) from fish teeth collected from the Black Grit of Amuri Bluff: Synechodus sulcatus (Davis) Scapanorhynchus subulatus (Agass.) (also Middle Waipara) Lamna crassa (Agass.) Callorhynchus hectori Newton Ischyodus thurmanni Pict. & Camp. The classification of New Zealand Cretaceous reptiles by Owen, Hector and Hutton needs revision. The following list is compiled from early published determinations, with some modification based on Romer (1950). Most of the Amuri Bluff specimens are from the Saurian Beds, but bones also occur in the Black Grit, and some may be from the underlying Piripauan Stage. ? Myopterygius sp. (listed by Romer) Elasmosaurus sp. (listed by Romer) Mauisaurus haasti Hect. (Amuri, Waipara) Mauisaurus latibrachialis (Amuri) Cimoliosaurus australis (Owen) (Amuri, Waipara) Cimoliosaurus caudalis Hutton (Waipara) Cimoliosaurus holmesii (Hect.) (Amuri, Waipara) Cimoliosaurus hoodii (Owen) (Amuri, Waipara) Cimoliosaurus mackayii (Hect.) (Amuri) Cimoliosaurus tenuis (Hect.) (Amuri) Tylosaurus haumuriensis (Hect.) (Amuri, Waipara) Taniwhasaurus oweni (Hect.) (Amuri) Crocodilus sp. (Amuri) Piripauan Stage (Upper Campanian) Type Locality. (Fig. 9): The Piripauan Stage is defined by the beds with Inoceramus australis and I. pacificus that form the lower and more fossiliferous part of the Piripauan of Thomson. The beds consist of calcareous sandstone with concretionary bands—the grey sandstone and calcareous conglomerate of McKay (1877)—and are about 200 feet thick. Details are given in a text section under Haumurian. The type Piripauan directly underlies the type Haumurian, the top of the Piripauan being at the base of the Black Grit. The base of the Piripauan is not exposed at the type locality, the lowest Piripauan bed being separated from the top of the probably Jurassic greywacke by a poorly exposed 50ft interval. Silicified wood and carbonaceous shale fragments indicate that the Piripauan probably passes down into fresh-water beds that rest unconformably on the greywacke. At Mikonui Stream, described as the east limb of the Amuri Bluff Section by McKay but actually separated from the main section on the coast by an anticlinal greywacke core, McKay collected Inoceramus nukeus. This fossil, which has not been recollected, is one of the key species of the Teratan Stage, and beds of this age probably underlie the Piripauan at Mikonui Stream. Freshwater beds with silicified wood, like that at Amuri Bluff, and bentonite (Fyfe, 1934) unconformably overlie the greywacke, but the contact with the overlying Cretaceous marine beds is not well exposed. The base of the Piripauan is well exposed 40 miles north of Amuri Bluff at Burnt Saddle on the track from Remuera Homestead to Coverham, where sandstone with I. pacificus and I. australis rests conformably on dark mudstone of Teratan age with Inoceramus nukeus, described as I. sp A by Wellman (1955:· 98). Distribution. Piripauan beds are known from several places in Raukumara Peninsula, East Coast Ranges, and East Marlborough, and occur at the type locality and at Conway River mouth in Canterbury, and at two places in Western Northland.