Large-bodied crocodile fossils found in Australia. Paleontology


A new genus and species of prehistoric crocodiles, Paludirex Vincenti, Has been identified from fossils unearthed in Queensland, Australia.

Paludirex Vincenti An extinct subspecies of crocodiles from Australia and the South Pacific belongs to Mechosuchinae. Image Credit: University of Queensland

Paludirex Vincenti 5 to 2.5 million years ago roamed the Earth during the Pliocene era.

Nicknamed the ‘Swamp King’, it grew to 5 meters (16.4 ft) and was able to prey on giant prehistoric marsupials.

“Crocus has been an important component of Australia’s fauna for millions of years,” senior author Dr. Said Steve Salisbury, a paleontologist at the School of Biological Sciences at the University of Queensland, Brisbane.

“But today we have two species – Crocodylus porus And Crocodylus johnstoni – are only recent arrivals, and were not part of the endemic croc fauna that existed here since about 55 million years ago. “

“or Paludirex Vincenti Such as became extinct as a result of competition with species Crocodylus porus it’s hard to say. “

“The alternative is that it became extinct with the drying up of the climate, and the river systems once populated it – we are currently investigating these scenarios.”

Paludirex vincenti, partial skull in ventricle view: (a) non-annotated picture of specimen embedded in concrete slab and (b) annotated photograph with concrete slab removed.  Abbreviations: enfen - external pigment fenstra, fro - frontal, if - inflammatory foramen, jug - costal, lacrimal, max - maxilla, nas - nasal, or - orbit, par - parietal, pmx - premaxilla, po - postorbital, prfbital - prefrontal , So - Supracocipital, Class - Squamosal, Stephane - Supertemporal Fefestra.  Image credit: Ristevsky et al., Doi: 10.7717 / peerj.10466.

Paludirex Vincenti, In partial skull ventral view: (a) non-annotated photograph as sample embedded in concrete slab, and (b) annotated picture with concrete slab removed. Abbreviations: enfen – external pigment fenstra, fro – frontal, if – inflammatory foramen, jug – costal, lacrimal, max – maxilla, nas – nasal, or – orbit, par – parietal, pmx – premaxilla, po – postorbital, prfbital – prefrontal , So – Supracocipital, Class – Squamosal, Stephane – Supertemporal Fefestra. Picture Sincerely: Ristevsky and others., Doi: 10.7717 / peerj.10466

Many fossil specimens Paludirex Vincenti Discovered near the town of Chinchilla in southeastern Queensland.

“The largest crocodile today is the Indo-Pacific crocodile, Crocodylus porus, Which grows to about the same size, ”lead author Jorgo Ristevski, a Ph.D. Candidate in the School of Biological Sciences at the University of Queensland, Brisbane.

“but Paludirex Vincenti There was a wider, more heavily-set skull, so it was similar to an Indo-Pacific crocodile.

The study was published in the journal this week PeerJ.

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J. Ristevsky and others. 2020. Prehistoric ‘Swamp King of Australia:’ Modification of the genus Pleo-Pleistocene Crocodylian Pallimnarchus De Vis, 1886. PeerJ 8: e10466; doi: 10.7717 / peerj.10466

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