Kalbarri (UWA collection) (Eocene to of Australia)

Where: Western Australia, Australia (27.8° S, 114.3° E: paleocoordinates 48.7° S, 99.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bartonian to Bartonian (41.3 - 33.9 Ma)

• Collectively, the planktonic foraminifers indicate that the newly discovered site belongs within the P13 to P16 zonal range (40.5 – 34.0 Ma BKSA95).

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, cherty/siliceous mudstone and poorly lithified, cherty/siliceous sandstone

• Because of the abundance of robust diverse miliolid foraminifers and the low planktonic percentage (about 10%), the new unit probably accumulated in inner neritic conditions (following Murray 1991), at water depths between about 10 and 30 m (based on unpublished observations of DW Haig for present-day assemblages along the Western Australian coast).
• Iron-stained siliceous argillites with scattered large fragments of silicified bryozoans as well as large (up to about 30 cm) intact siliceous sponges. A relatively clean sponge spicule dominated arenite that includes silicified calcareous skeletal grains (including abundant foraminifers, and common gastropods and bryozoan fragments) is also present.

Size class: macrofossils

Preservation: original silica, replaced with silica

Collection methods: Repository: University of Western Australia

Primary reference: D. W. Haig and A. J. Mory. 2003. New record of siliceous, marine, later Eocene from Kalbarri, Western Australia. Journal of the Royal Society of Western Australia 86:107-113 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 179822: authorized by Matthew Clapham, entered by Matthew Clapham on 02.07.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Foraminifera
 Globigerinina - Hedbergellidae
? Turborotalia sp. Cushman and Burmudez 1949
  -
 Globigerinoidea - Globigerinidae
Demospongea
  -
"Demospongea indet." = Demospongiae
"Demospongea indet." = Demospongiae Sollas 1875 demosponge
Cephalopoda
 Nautilida - Aturiidae
Aturia clarkei Teichert 1944 nautiloid
 Nautilida - Nautilidae
Eutrephoceras sp. Hyatt 1894 nautiloid
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831