Walpole, north (Eocene of Australia)

Where: Western Australia, Australia (34.8° S, 116.7° E: paleocoordinates 54.8° S, 102.1° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Pallinup Siltstone Member (Werillup Formation), Priabonian (38.0 - 33.9 Ma)

• The Werillup Formation is regarded as late Middle Eocene. This is supported by the presence of the Dasycladcian algae, Larvana and Neomeris (Cockbain 1969) and the foraminifer Asterocylinia(Cockbain 1967). The Pallinup Siltstone is of similar age, again from the presence of the nautiloid Aturia clarkei and foraminifer reported by Backhouse (1969), Cockbain (1968a) and Quilty (1969). The foraminifers correspond with Ludbrook's "Tortachilla microfauna" (Cockbain 1968c).

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, brown, white, cherty/siliceous siltstone

• Was laid down in a shallow transgressive sea with negligible input of terrigenous material, allowing sponges to thrive. The Pallinup Siltstone formed in a shallow shelf environment with well circulated water of normal marine salinity. They inferred a depth of deposition of 76 m but Pickett (1982) suggested this estimate might be too great. Churchill (1973) and Clarke (1994) inferred a depth of deposition of approximately 150 m. The estimates of depth of deposition by Darragh and Kendrick (1980) are therefore possibly conservative.
• Cockbain (1968c) described the Pallinup Siltstone as typically 'white, brown or red siltstone and spongolite.'

Size class: macrofossils

Reposited in the WAM

Primary reference: T. A. Darragh. 2017. Further Mollusca from the late Eocene Pallinup Formation, Eucla Basin, Western Australia. Records of the Western Australian Museum 32:29-100 [M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 205816: authorized by Mark Uhen, entered by Mark Uhen on 23.10.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ptenoglossa - Epitoniidae
Epitoniidae indet. Berry 1910 wentletrap
Notacirsa lampra Tate 1890 wentletrap
Cirsotrema pleiophylla Tate 1890 wentletrap
 Opisthobranchia - Cylichnidae
Cylichna cf. angustata Cossman and Cossman 1897 snail
 Triphoroidea - Triforidae
Cerithiella sp. Verrill 1882 snail
Cerithiella limula n. sp. Darragh 2017 snail
 Triphoroidea - Triphoridae
Inella moniliferata n. sp. Darragh 2017 snail
Inella dauciformis n. sp. Darragh 2017 snail
? Viriola sp. Jousseaume 1884 snail
Mastoniaeforis pagodiformis n. sp. Darragh 2017 snail
Costatophora pulcherrima n. sp. Darragh 2017 snail
 Triphoroidea - Newtoniellidae
Eumetula sp. Thiele 1912 snail
Trituba sp. Jousseaume 1884 snail
Trituba (Granulotriforis) umboseriata n. sp. Darragh 2017 snail
Ataxocerithium otopleuroides n. sp. Darragh 2017 snail
Ataxocerithium multicostulatum n. sp. Darragh 2017 snail
Ataxocerithium biaulax n. sp. Darragh 2017 snail
Ataxocerithium venustulum n. sp. Darragh 2017 snail
 Triphoroidea - Cerithiopsidae
Cerithiopsidae indet. Adams and Adams 1853 snail
? Cerithiopsis sp. Hanley 1849 snail
Cerithiopsis pustuloclathrata n. sp. Darragh 2017 snail
Seila stenopyrgisca n. sp. Darragh 2017 snail
 Neogastropoda - Olividae
Belloliva canaliculata n. sp. Darragh 2017 olive snail
 Neogastropoda -
"Amalda (Gracilispira) ligata" = Gracilispira ligata
"Amalda (Gracilispira) ligata" = Gracilispira ligata Tate 1889 snail
 Neogastropoda - Columbellidae
Retizafra sp. Hedley 1913 snail
Mitrella sp. Risso 1826 snail
 Neogastropoda - Buccinidae
? Tasmeuthria arenicola n. sp. Darragh 2017 true whelk
 Neogastropoda - Melongenidae
? Pugilina sp. Schumacher 1817 snail
 Neogastropoda - Fasciolariidae
Fusinus sculptilis Tate 1888 snail
 Neogastropoda - Cancellariidae
Turehua sp. Marwick 1943 snail
 Neogastropoda - Marginellidae
Ovaginella mumiformis n. sp. Darragh 2017 margin shell
Ovaginella arenula n. sp. Darragh 2017 margin shell
Eratoidea fusoides n. sp. Darragh 2017 margin shell
Cryptospira hordeastra n. sp. Darragh 2017 margin shell
"Serrata cf. mala" = Marginella mala Cotton 1949 margin shell
 Neogastropoda - Volutidae
Mitreola salaputium Darragh 1989 volute
Lyria craticulata n. sp. Darragh 2017 volute
 Neogastropoda - Costellariidae
Conomitra strombodiformis n. sp. Darragh 2017 ribbed mitre
 Neogastropoda - Muricidae
"Laevityphis ludbrookae" = Laevityphis (Laevityphis) ludbrookae Keen and Campbell 1964 murex snail
Attiliosa arenaria n. sp. Darragh 2017 murex snail
Hexaplex ? tridentatus Tate 1888 murex snail
Timbellus calvus Tate 1888 mustached bat
Dermomurex sp. Monterosato 1890 murex snail
Dermomurex silicatus n. sp. Darragh 2017 murex snail
"Ocenebra prionotus" = Murex prionotus Tate 1888 murex snail
Coralliophila sp. Adams and Adams 1853 murex snail
 Neogastropoda - Volutomitridae
 Neogastropoda - Cochlespiridae
Apiotoma sp. Cossmann 1889 snail
 Neogastropoda - Mangeliidae
Neoguraleus filiferus n. sp. Darragh 2017 snail
 Neogastropoda - Drilliidae
? Splendrillia sp. Hedley 1922 snail
 Neogastropoda - Raphitomidae
 Neogastropoda - Borsoniidae
Cordieria torquata n. sp. Darragh 2017 snail
Cordieria fuscoamnica n. sp. Darragh 2017 snail
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
Conorbis notialis n. sp. Darragh 2017 cone shell
 Neogastropoda - Pseudomelatomidae
? Comitas sp. Finlay 1926 snail
Comitas silicicola n. sp. Darragh 2017 snail
"Comitas aldingensis" = Comitas (Carinocomitas) aldingensis Powell 1944 snail
 Vanikoroidea - Eulimidae
Eulima danae Tenison Woods 1879 snail
? Melanella sp. Bowdich 1822 snail
? Curveulima sp. Laseron 1955 snail
Niso kimberi Pritchard 1906 snail
 Velutinoidea - Triviidae
"Triviella pompholugota" = Semitrivia pompholugota, Archierato pyrulata
"Triviella pompholugota" = Semitrivia pompholugota Tate 1890 snail
Archierato pyrulata Tate 1890 snail
 Naticoidea - Naticidae
Tanea hamiltonensis Tenison Woods 1879 moon snail
? Euspirocrommium sp. Sacco 1890 moon snail
 Cypraeoidea - Eocypraeidae
Willungia ovulatella Tate 1890 snail
 Cypraeoidea - Ovulidae
Phenacovolva sp. Iredale 1930 snail
 Cypraeoidea - Cypraeidae
Zoila viathomsoni Darragh 2011 cowry
 Calyptraeoidea - Trichotropidae
Cerithioderma tabulata Tate 1890 snail
 Xenophoroidea - Xenophoridae
Xenophora sp. Fischer von Waldheim 1807 carrier shell
 Tonnoidea - Ranellidae
Sassia tortirostris triton shell
 Rissooidea - Rissoidae
Rissoidae indet. Gray 1847 snail
 Sorbeoconcha - Siliquariidae
Tenagodus ? occlusus, "Thylacodes actinotus" = Lilax actinotus
Tenagodus ? occlusus Tenison Woods 1877 snail
"Thylacodes actinotus" = Lilax actinotus Tate 1893 snail
 Sorbeoconcha - Turritellidae
Glyptozaria sp. Iredale 1924 turret shell
 Sorbeoconcha - Cerithiidae
Cerithiidae indet. Fleming 1822 cerith snail
Pseudovertagus longbottomi n. sp. Darragh 2017 cerith snail
Clavocerithium kendricki n. sp. Darragh 2017 cerith snail
Orthochetus pagoda Chapman and Crespin 1934 cerith snail
Jetwoodsia nullarborica Tate 1879 cerith snail
 Pyramidelloidea - Pyramidellidae
Syrnola sp. Adams 1860 snail
Turbonilla sp. Risso 1826 snail
"Pyrgiscus sp." = Turbonilla (Pyrgiscus) Philippi 1841 snail
 Architectonicoidea - Architectonicidae
 Turbinoidea - Turbinidae
Crosseola princeps Tate 1890 snail
 Dentaliida - Dentaliidae
Fissidentalium mawsoni Ludbrook 1956 tusk shell
 Nautilida - Nautilidae
? Eutrephoceras sp. Hyatt 1894 nautiloid