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New evidence on the taphonomic context of the Ediacaran Pteridinium

100%

Elliott D. A., Vickers-Rich P., Trusler P., Hall M.

Acta Palaeontologica Polonica

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2011

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tom 56

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nr 3

New material collected from the Kliphoek Member of the Nama Group (Kuibis Subgroup, Dabis Formation) on Farm Aar, southern Namibia, offers insights concerning the morphology of the Ediacaran organism Pteridinium. Pteridinium fossils previously described as being preserved in situ have been discovered in association with scour−and−fill structures indicative of transport. Additionally, two Pteridinium fossils have been found within sedimentary dish structures in the Kliphoek Member. A form of organic surface with a discrete membrane−like habit has also been recovered from Farm Aar, and specimens exist with both Pteridinium and membrane−like structures superimposed. The association between Pteridinium fossils and membrane−like structures suggests several possibilities. Pteridinium individuals may have been transported before burial along with fragments of microbial mat; alternately they may have been enclosed by an external membranous structure during life.

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Second specimen of Corriebaatar marywaltersae from the Lower Cretaceous of Australia confirms its multituberculate affinities

64%

Rich T. H., Krause D. W., Trusler P., White M. A., Kool L., Evans A. R., Morton S., Vickers-Rich P.

Acta Palaeontologica Polonica

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2022

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tom 67

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nr 1

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Monotreme nature of the Australian Early Cretaceous mammal Teinolophos

64%

Rich T. H., Vickers-Rich P., Trusler P., Flannery T. F., Cifelli R., Constantine A., Kool L., Van Klaveren N.

Acta Palaeontologica Polonica

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2001

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tom 46

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nr 1

The morphology of the single preserved molar of the holotype of the Australian Early Cretaceous (Aptian) mammal Teinolophos trusleri shows that it is a monotreme and probably a steropodontid, rather than a 'eupantothere' as originally proposed. The structure of the rear of the jaw of T. trusleri supports the molecular evidence that previously formed the sole basis for recognising the Steropodontidae as a distinct family.

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An Australian multituberculate and its palaeobiogeographic implications

51%

Rich T. H., Vickers-Rich P., Flannery T. F., Kear B. P., Cantrill D. J., Komarower P., Kool L., Pickering D., Trusler P., Morton S., Van Klaveren N., Fitzgerald E. M. G.

Acta Palaeontologica Polonica

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2009

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tom 54

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nr 1

1-6

A dentary fragment containing a tiny left plagiaulacoid fourth lower premolar from the Early Cretaceous (Aptian) of Victoria provides the first evidence of the Multituberculata from Australia. This unique specimen represents a new genus and species, Corriebaatar marywaltersae, and is placed in a new family, Corriebaataridae. The Australian fossil, together with meagre records of multituberculates from South America, Africa, and Madagascar, reinforces the view that Multituberculata had a cosmopolitan distribution during the Mesozoic, with dispersal into eastern Gondwana probably occurring prior to enforcement of climatic barriers (indicated by marked differentiation in regional floras) in the Early Cretaceous.

Ograniczanie wyników

4 Acta Palaeontologica Polonica

4 Trusler P.

4 Vickers-Rich P.

3 Kool L.

3 Rich T. H.

2 Flannery T. F.

2 Morton S.

2 Van Klaveren N.

1 Cantrill D. J.

1 Cifelli R.

1 Constantine A.

1 Elliott D. A.

1 Evans A. R.

1 Fitzgerald E. M. G.

1 Hall M.

1 Kear B. P.

1 Komarower P.

1 Krause D. W.

1 Pickering D.

1 White M. A.

1 2022

1 2011

1 2009

1 2001

New evidence on the taphonomic context of the Ediacaran Pteridinium

Second specimen of Corriebaatar marywaltersae from the Lower Cretaceous of Australia confirms its multituberculate affinities

Monotreme nature of the Australian Early Cretaceous mammal Teinolophos

An Australian multituberculate and its palaeobiogeographic implications