First record of a tomistomine crocodylian from Australia
Open Access
- 9 June 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 11 (1), 1-14
- https://doi.org/10.1038/s41598-021-91717-y
Abstract
Based on the known fossil record, the majority of crocodylians from the Cenozoic Era of Australia are referred to the extinct clade Mekosuchinae. The only extant crocodylians in Australia are two species of Crocodylus. Hence, the viewpoint that Crocodylus and mekosuchines have been the only crocodylians inhabiting Australia during the Cenozoic has remained largely undisputed. Herein we describe Australia’s first tomistomine crocodylian, Gunggamarandu maunala gen. et sp. nov., thus challenging the notion of mekosuchine dominance during most of the Cenozoic. The holotype specimen of Gunggamarandu maunala derives from the Pliocene or Pleistocene of south-eastern Queensland, marking the southern-most global record for Tomistominae. Gunggamarandu maunala is known from a large, incomplete cranium that possesses a unique combination of features that distinguishes it from other crocodylians. Phylogenetic analyses place Gunggamarandu in a basal position within Tomistominae, specifically as a sister taxon to Dollosuchoides from the Eocene of Europe. These results hint at a potential ghost lineage between European and Australian tomistomines going back more than 50 million years. The cranial proportions of the Gunggamarandu maunala holotype specimen indicate it is the largest crocodyliform yet discovered from Australia.This publication has 73 references indexed in Scilit:
- Gavialis from the Pleistocene of Thailand and Its Relevance for Drainage Connections from India to JavaPLOS ONE, 2012
- The Early Evolution of Archosaurs: Relationships and the Origin of Major CladesBulletin of the American Museum of Natural History, 2011
- Kambara tarainasp. nov. (Crocodylia, Crocodyloidea), a new Eocene mekosuchine from Queensland, Australia, and a revision of the genusJournal of Vertebrate Paleontology, 2009
- SYSTEMATICS AND TAXONOMY OF EOCENE TOMISTOMINE CROCODYLIANS FROM BRITAIN AND NORTHERN EUROPEPalaeontology, 2007
- Eosuchus(Crocodylia, Gavialoidea) from the lower Eocene of the Isle of Sheppey, EnglandJournal of Vertebrate Paleontology, 2006
- OSTEOLOGY AND PHYLOGENETIC SIGNIFICANCE OF EOSUCHUS MINOR (MARSH, 1870) NEW COMBINATION, A LONGIROSTRINE CROCODYLIAN FROM THE LATE PALEOCENE OF NORTH AMERICAJournal of Paleontology, 2006
- Italian Cenozoic crocodilians: taxa, timing and palaeobiogeographic implicationsPalaeogeography, Palaeoclimatology, Palaeoecology, 2004
- A primitive marine gavialoid from the Paleocene of MoroccoJournal of Vertebrate Paleontology, 2004
- A new crocodylian from the Early Eocene of south-eastern Queensland and a preliminary investigation of the phylogenetic relationships of crocodyloidsAlcheringa: An Australasian Journal of Palaeontology, 1996
- Confidence Limits on Phylogenies: An Approach Using the BootstrapEvolution, 1985