PBDB Collection

Kalbarri (McNamara/Radford 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accumulated in inner neritic conditions (following Murray 1991), at water depths between about 10 and 30 m (based on unpublished observations of DW Haig for present-day assemblages along the Western Australian coast). Darragh & Kendrick inferred a deeper water, perhaps middle shelf environment of deposition, although the rolled and broken nature of all the fossils and the coarse sediment in which they are found may indicate that the material had been washed into shallower water.

• 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

Collected by K.J., K.A. and J.P. McNamara, S.P. Radford in 2004; reposited in the WAM

Primary reference: T. A. Darragh and G. W. Kendrick. 2008. Silicified Eocene molluscs from the Lower Murchison district, southern Carnarvon Basin, Western Australia. Records of the Western Australian Museum 24:217-246 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 179824: authorized by Matthew Clapham, entered by Matthew Clapham on 02.07.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Scaphopoda
Dentaliida - Dentaliidae	Dentalium (Fissidentalium) mawsoni Dentalium (Fissidentalium) mawsoni Ludbrook 1956 tusk shell
Bivalvia
Arcida - Glycymerididae	Tucetona lenticularis Tucetona lenticularis Tate 1886 clam
Lucinida - Lucinidae	Epicodakia sp. Epicodakia sp. Iredale 1930 clam
Cardiida - Cardiidae	Pratulum hemimeris Pratulum hemimeris Tate 1887 cockle
Cardiida - Veneridae	Dosinia (Dosinia) multilamellata Dosinia (Dosinia) multilamellata Tate 1887 venus clam
Gastropoda
Cerithioidea - Cerithiidae	Cerithium wilya Cerithium wilya Darragh and Kendrick 2008 cerith snail
Cerithioidea - Siliquariidae	Tenagodus sp. Tenagodus sp. Guettard 1770 snail
Cerithioidea - Turritellidae	Zeacolpus bartoni Zeacolpus bartoni Darragh and Kendrick 2008 turret shell
Epitonioidea - Epitoniidae	Cirsotrema aff. pleiophylla Cirsotrema aff. pleiophylla Tate 1890 wentletrap
Sorbeoconcha - Naticidae	Naticidae indet. Naticidae indet. Guilding 1834 moon snail
Sorbeoconcha - Cerithiopsidae	Notoseila sp. Notoseila sp. Finlay 1926 snail
Sorbeoconcha - Triforidae	Cerithiella sp. Cerithiella sp. Verrill 1882 snail
Neogastropoda - Marginellidae	Marginella "sp. A" Marginella "sp. A" Lamarck 1799 margin shell
Neogastropoda - Volutidae	Alcithoe (Waihaoia) pagodoides, Lyria lamellatoplicata Alcithoe (Waihaoia) pagodoides Tate 1888 volute Lyria lamellatoplicata Darragh and Kendrick 2008 volute
Neogastropoda - Fasciolariidae	Dennantia aldingensis Dennantia aldingensis Tate 1888 snail
Trochoidea - Trochidae	Calliostoma (Fautor) aff. numapum, Micrelenchus (Plumbelenchus) armulatus Calliostoma (Fautor) aff. numapum Darragh and Kendrick 2000 top snail Micrelenchus (Plumbelenchus) armulatus Darragh and Kendrick 2000 top snail
Lepetellida - Fissurellidae	Emarginula sp. Emarginula sp. Lamarck 1801 snail