W16/f7530, Waiotahi Valley (Cretaceous of New Zealand)

Also known as N78/f530; GS9747

Where: New Zealand (38.2° S, 177.2° E: paleocoordinates 80.9° S, 179.2° E)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Aptian (125.0 - 113.0 Ma)

• STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit, which unconformably overlies the Torlesse Supergroup. AGE: Korangan-Urutawan, on the basis of macrofossil biostratigraphy. Here placed in Korangan = Aptian based on its stratigraphic position. STRATIGRAPHIC POSITION: From 20-50 m above base of formation.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, fine-grained, medium sandstone

• ENVIRONMENT: Shallow marine, inner shelf paleoenvironment.
• SPECIFIC LITHOLOGY: Fine-medium sand. LITHIFICATION: Lithified, based on facies description.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Gair et al in 1966; reposited in the IGNS

Collection methods: surface (in situ),

• COLLECTOR: H.S. Gair, M.R. Johnston, I.G. Speden, 1966. REPOSITORY: GSNZ (now GNS Science, Lower Hutt, New Zealand).

Primary reference: I.G. Speden. 1975. Cretaceous stratigraphy of Raukumara Peninsula. New Zealand Geological Survey Bulletin 91 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 83428: authorized by Austin Hendy, entered by Austin Hendy on 20.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia, and other invertebrate groups (cephalopoda, gastropoda, echinoidea, bryozoa, annelida listed). NOMENCLATURE: Not an authoritative publication, and generally lacking species-level designations. Identified by specialist (Speden), and lack of species names reflects poor preservation and insufficient existing taxonomic knowledge.
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Bivalvia
 Pholadida - Pleuromyidae
Pleuromya sp. Meek 1873 clam
 Cardiida - Neomiodontidae
 Trigoniida - Trigoniidae
"? Iotrigonia sp." = Megatrigonia (Iotrigonia)
"? Iotrigonia sp." = Megatrigonia (Iotrigonia) Van Hoepen 1929 clam
 Myalinida - Inoceramidae
Inoceramus sp. Sowerby 1814 clam
 Pectinida - Oxytomidae
 Mytilida - Mytilidae
? Eyrena sp. Ludbrook 1966 mussel