O32/f9031 [Conway Siltstone] (Cretaceous of New Zealand)

Also known as S56/f31; GS9

Where: New Zealand (42.6° S, 173.5° E: paleocoordinates 64.7° S, 144.1° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Conway Siltstone Formation, Piripauan (85.8 - 83.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Conway Siltstone, which conformably overlies Tarapuhi Grit, and is conformably overlain by the Claverley Sandstone. AGE: Piripauan-Haumurian (=Coniacian-early Campanian), on the basis of macrofossil biostratigraphy. STRATIGRAPHIC POSITION: Loose boulders on beach.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified siltstone

• ENVIRONMENT: Intertidal or directly subtidal environment along present day shorelines in moderate energy.
• SPECIFIC LITHOLOGY: Siltstone. LITHIFICATION: Lithified, based on facies description (FRED).

Size class: macrofossils

Preservation: cast, mold/impression

Collected by McKay in 1873; reposited in the IGNS

Collection methods: surface (float),

• COLLECTOR: A. McKay, 1873. REPOSITORY: GSNZ (now GNS Science, Lower Hutt, New Zealand).

Primary reference: G. Warren and I. Speden. 1977. The Piripauan and Haumurian stratotypes (Mata Series, Upper Cretaceous) and correlative sequences in the Haumuri Bluff District, South Marlborough. New Zealand Geological Survey Bulletin 92:1-60 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 83537: authorized by Austin Hendy, entered by Austin Hendy on 21.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia, gastropoda, cephalopoda, and other invertebrate and vertebrate groups. NOMENCLATURE: Not an authoritative publication, but with relatively modern nomenclature and species-resolution identifications.
 Sabellida - Serpulidae
 Arcida - Glycymerididae
 Myalinida - Inoceramidae
 Pectinida - Pectinoidae
? Aequipecten sp. Fischer 1886 scallop
 Neogastropoda - Conidae
? Conus sp. Linnaeus 1758 cone shell
 Stromboidea - Struthiolariidae
 Stromboidea - Aporrhaidae
 Sorbeoconcha - Potamididae
 Basommatophora - Siphonariidae
Anisomyon sp. Meek and Hayden 1860 pulmonate
 Belemnitida - Dimitobelidae
"Dimitobelus hectori" = Dimitobelus (Dimitocamax) hectori
"Dimitobelus hectori" = Dimitobelus (Dimitocamax) hectori Stevens 1965 belemnite
 Ammonitida - Kossmaticeratidae
? Gunnarites zelandicus Marshall 1917 ammonite
Reptilia sp. Laurenti 1768 reptile
 Squamata - Mosasauridae
Mosasauridae indet., "Tylosaurus haumuriensis n. sp." = Taniwhasaurus oweni
Mosasauridae indet. Gervais 1852 mosasaur
"Tylosaurus haumuriensis n. sp." = Taniwhasaurus oweni Hector 1874 mosasaur
 Plesiosauria -
Plesiosauria sp. plesiosaur
 Sauropterygia - Polycotylidae
Polycotylidae indet. Williston 1908 plesiosaur
 Sauropterygia - Elasmosauridae
Elasmosauridae indet. Cope 1869 elasmosaur
Mauisaurus haasti Hector 1874 elasmosaur