Also known as Bore 81

Where: South Australia, Australia (34.9° S, 138.6° E: paleocoordinates 40.5° S, 137.0° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Dry Creek Sands Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: Presumably unconformably underyling Pliocene Hallett Cove Sandstone (Pleistocene-Recent in Fig. 2 of Ludbrook 1954) The Dry Creek Sands are a correlate of the Bookpurnong Fm (Beu and Darragh 2001). THICKNESS: Typically the Dry Creek Sands are less than 200 ft thick based on Fig. 2 of Ludbrook (1954). AGE: Previously regarded as Pliocene in age (Ludbrook 1954, 1963). However more recent idependent assessments of foraminifera and dinoflagellates (Brown and Stephenson 1991; Macphail and Kellett 1993) and Mollusca (Beu and Darragh 2001) suggest that the lower Dry Creek Sands (greater than 105-115 m) are of Bairnsdalian-Mitchelian age (latest Middle Miocene-early Late Miocene). A Late Miocene age is adopted here = Mitchelian. STRATIGRAPHIC POSITION: Composite list for Dry Creek Sands. From multiple horizons between 330 and 420 ft in the bore.

• formation-level stratigraphic resolution

Environment/lithology: coastal; unlithified, fine-grained, shelly/skeletal, gray, white sandstone

Size class: macrofossils

Preservation: original aragonite, original calcite

Collection methods: core,

• COLLECTOR: Collected by multiple parties during the irregular construction of bores within the vicinity of Adelaide. Reported on by previous authors including Tate (1890, 1898), Tate and Dennant (1896), Hall and Pritchard (1902), Howchin (1914, 1928) and Chapman (1916). These authors reported piecemeal this fauna, while Ludbrook (1954-1956) presents more detailed taxonomy and thorough covereage of all bores. REPOSITORY: Most material reposited in Tate Collection, University of Adelaide, while some is preserved in the MNHM in Paris and BMNH.

Primary reference: N.H. Ludbrook. 1953. The molluscan fauna of the Pliocene strata underlying the Adelaide Plains. Part 1. Transactions of the Royal Society of South Australia 77:42-64 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 63436: authorized by Austin Hendy, entered by Austin Hendy on 15.08.2006

Creative Commons license: CC BY (attribution)