Where: South Island, New Zealand (43.1° S, 172.6° E: paleocoordinates 56.4° S, 153.8° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Conway Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• The lithology was defined by Webb (1966) as the Laidmore Formation, a term also used in Welles and Gregg (1971). Later Warren and Speden (1978, p. 25) proposed that the Laidmore Formation be considered as a unit of the Conway Siltstone (Warren and Speden 1978); this was subsequently modified and published as the Conway Formation (Browne and Field 1985) and is now widely accepted as such (Wilson et al. 2005). The material was collected 6 m below the top of the Conway Formation. Wilson et al. (2005) extracted a sample from the matrix surrounding the holotype of P. waiparaensis and recorded a microflora dominated by taxa such as Manumiella seelandica (Lange, 1969), Manumiella druggii (Stover, 1973), Fibrocysta bipolaris (Cookson and Eisenack, 1965) and Alterbidinium longicornutum Roncaglia and Schiøler, 1997, an assemblage that confirms a late Maastrichtian age, close to the Cretaceous ⁄ Palaeogene boundary.
• bed-level stratigraphic resolution
Environment/lithology: offshore; lithified, glauconitic sandstone
Size class: macrofossils
• Polycotylidae fragments: DM 36074-75 (two posterior cervical centra), DM 37413 (six vertebra and four ribs).
•Elasmosauridae fragments: DM R 36073-36073a (fused mid-portion of the coracoids)
Collected by T. H. C. Hood in 1859; reposited in the CM
Collection methods: surface (in situ),
• DM R, Museum of New Zealand Te Papa Tongarewa, Wellington
Primary reference: S. P. Welles and D. R. Gregg. 1971. Late Cretaceous marine reptiles of New Zealand. Records of the Canterbury Museum 9(1):1-111 [M. Carrano/H. Street]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 232400: authorized by Evangelos Vlachos, entered by Franco Aspromonte on 16.11.2023
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
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Polycotylidae indet. Williston 1908 plesiosaur DM 36074-75 (two posterior cervical centra), DM 37413 (six vertebra and four ribs)
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