Two new cowries (Gastropoda: Cypraeidae) from the middle Miocene of South Australia

Ceratodus diutinus, a new species of ceratodont lungfish similar to but not identical with Ceratodus kaupi Agassiz, 1838–1844, is described from the Lower Cretaceous Griman Creek Formation at Grawan and Lightning Ridge in northern New South Wales, Australia, and the Toolebuc Formation at Canary Station near Boulia in western Queensland. The species also occurred in one Late Oligocene–Middle Miocene deposit at North Prospect, Lake Pinpa, South Australia (Namba Formation). This is the first record from Australia of a species of Ceratodus similar to the Triassic ceratodonts of Europe. The Australian species lasted much longer than the related European species, C. kaupi, which is restricted to Triassic deposits.

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Macropodoids from the Middle Miocene Namba Formation, South Australia, and the homology of some dental structures in kangaroos

Journal of Paleontology ◽

10.1017/s0022336000021958 ◽

1986 ◽

Vol 60 (2) ◽

pp. 418-447 ◽

Cited By ~ 22

Author(s):

Tim Flannery ◽

Thomas H. V. Rich

Keyword(s):

Middle Miocene ◽

South Australia ◽

Local Fauna

Macropodoids from the Tarkarooloo local fauna, including Nambaroo tarrinyeri n. gen. and sp., N. saltavus n. sp., N. novus n. sp. and Palaeopotorous priscus n. gen. and sp., include the most plesiomorphic macropodids and potoroids known. Together with the newly discovered macropodoids from the Pinpa and Yanda local faunas they are also the oldest macropodoids described. Study of the morphology of these plesiomorphic macropodoids indicates that the trigonid of the M2 in potoroids and macropodids is composed of different structures (the protoconid and metaconid in macropodids and the protoconid and protostylid in potoroids). Also, the posterior cingulum in macropodids is a neomorphic structure, and not homologous with the posterior cingulum (the posthypocristid and postentocristid) in potoroids and phalangerids. A unique M2 trigonid configuration, where the cristid obliqua connects with the protostylid, is here recognized as being present in plesiomorphic macropodoids and phalangerids, and possibly represents a synapomorphy for a clade containing members of those groups.

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Course of the lower River Murray in South Australia: effects of underprinting and neotectonics?

Proceedings of the Royal Society of Victoria ◽

10.1071/rs09207 ◽

2009 ◽

Vol 121 (2) ◽

pp. 207 ◽

Cited By ~ 2

Author(s):

C.R. Twidale ◽

J.A. Bourne

Keyword(s):

Sea Level ◽

Structural Control ◽

Middle Miocene ◽

Country Rock ◽

South Australia ◽

Valley Floor ◽

Lower Section ◽

Late Pliocene ◽

North West ◽

Late Tertiary

The change in direction of the River Murray from westerly to southerly at North West Bend has been attributed to faulting or warping, but no appropriate structure has been located in the country rock coincident with the river course. Yet the angularity and the straightness of major sectors argue structural control. The plan course of the Murray downstream from Morgan is attributed to underprinting from basement fractures following the Middle Miocene but prior to the Late Pliocene. Uplift of the Marmon Jabuk structure superimposed on the effects of underprinting accounts for major departures from the SSW trend downstream from North West Bend, as well as the impounding of Lake Bungunnia. The upper shallow section of the valley-in-valley form was shaped at a time of higher baselevel in the Middle-Late Tertiary. The lower section is the present Gorge. The valley floor was lowered probably by subterranean solution and flow followed by collapse of the cavern roofs. Regression of the River at times of lower sea level caused the breach of the Marmon Jabuk blockage and the draining of Lake Bungunnia.

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Two new Middle Miocene spatangoids (Echinoidea) from the Murray Basin, South Australia

Memoirs of Museum Victoria ◽

10.24199/j.mmv.2005.62.3 ◽

2005 ◽

Vol 62 (1) ◽

pp. 91-99 ◽

Cited By ~ 1

Author(s):

Francis C. Holmes ◽

Christopher Ah Yee ◽

Janice Krause

Keyword(s):

Middle Miocene ◽

South Australia ◽

Murray Basin

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New azooxanthellate genus of Scleractinia (Flabellidae) from the Australian Cenozoic

Journal of Paleontology ◽

10.1017/jpa.2016.83 ◽

2017 ◽

Vol 91 (3) ◽

pp. 407-416 ◽

Cited By ~ 1

Author(s):

Stephen D. Cairns

Keyword(s):

New Species ◽

Scleractinian Coral ◽

Middle Miocene ◽

New Genus ◽

South Australia ◽

Late Eocene ◽

Nomen Dubium ◽

One New Species

AbstractA new genus of flabellid scleractinian coral, Periplacotrochus, is described from the late Eocene to middle Miocene of Victoria, South Australia, and Tasmania. It differs from Placotrochus in having a pedicellate base, and from Flabellum in having a lamellar columella. Six previously described species are redescribed, illustrated, and reassigned to this genus (P. deltoideus Duncan, 1864, P. corniculatus Dennant, 1899, P. elongatus Duncan, 1864, P. pueblensis Dennant, 1903, P. inflectus Dennant, 1903, and P. magnus Dennant, 1904), and one new species is described: P. cudmorei. One species, Placotrochus elegans Tennison-Woods, 1878a, is considered as a nomen dubium. A key is provided to the seven species placed in this genus.

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