Protemnodon

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Protemnodon [1]
Temporal range: Pliocene - Late Pleistocene
Protemnodon anak skull.jpg
Skull of Protemnodon anak at the Melbourne Museum
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Diprotodontia
Family: Macropodidae
Subfamily: Lagostrophinae
Genus: Protemnodon
Owen, 1874
Type species
Protemnodon anak
Owen, 1874
Paleospecies
  • P. anak
  • P. brehus
  • P. chinchillaensis
  • P. hopei
  • P. otibandus
  • P. roechus
  • P. snewini
  • P. tumbuna

Protemnodon is an extinct genus of megafaunal macropodids that existed in Australia, Tasmania, and New Guinea in the Pliocene and Pleistocene. Members of this genus are also called giant kangaroos.

Contents

Taxonomy

Recent analysis of mtDNA extracted from fossils indicates that Protemnodon was closely related to Macropus . [2] The species formerly known as Protemnodon bandharr and Protemnodon buloloensis have been moved to a new genus, Silvaroo, while the New Guinean species P. nombe has been moved to the new genus Nombe. [3]

Description

Restoration of Protemnodon anak Protemnodon anak.jpg
Restoration of Protemnodon anak

Based on fossil evidence, Protemnodon is thought to have been physically similar to wallabies, but generally larger and more robust. Protemnodon roechus was the largest in the genus, weighing around 170 kg. [4]

Several species of Protemnodon survived up until around 50,000 years ago. P. tumbuna may have survived in the highlands of Papua New Guinea as recently as 12,000 years B.P. [5]

Related Research Articles

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Watutia is an extinct genus of fossil kangaroo known from the Pliocene from New Guinea. It is only known from the type species Watutia novaeguineae, known from some fragmentary upper and lower jaws and isolated teeth from the Pliocene Otibanda Formation in the Morobe Province of Papua New Guinea. The closest relative of the genus was possibly Hadronomas, who lived in today's Queensland a few million years earlier. W. novaeguineae was about the size of a large shrub wallaby (Dorcopsis) and differs in some characteristics from the teeth of other kangaroos. The molars were low and the first premolars elongated. Cristids obliqua and posterior cingula are missing on the lower molars. The feature that defines the close association with Hadronomas was the upper first premolar, which was more bulbous with no lingual cingulum, differing it from most Macropods.

<i>Bohra</i> (genus) Extinct genus of marsupials

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Nombe is an extinct genus of macropodid containing a single species, Nombe nombe. which was formerly classified as a member of the genus Protemnodon. It was native to New Guinea during the Late Pleistocene. It was relatively large in body size and is thought to have been a browser. Phylogenetic analysis suggests that it is a basal member of the subfamily Macropodinae.

<i>Congruus</i> Extinct genus of macropod

Congruus is an extinct genus of macropod known from the Late Pleistocene of Australia. There are two species, Congruus kitcheneri, which was originally described as a species of Wallabia, and Congruus congruus. Specimens are known from Mammoth Cave, Western Australia, the Thylacoleo Caves and the Naracoorte caves in South Australia. Potential material is also known from Eastern Australia. The morphology of the skull and limbs suggests that they were semi-arboreal browsers, moving slowly through trees, though they were larger than and not as specialised for climbing as living tree kangaroos. They are thought to be members of the tribe Macropodini, and close relatives of the extinct genus Protemnodon.

References

  1. Haaramo, M. (20 December 2004). "Mikko's Phylogeny Archive: Macropodidae - kenguroos". Archived from the original on 31 March 2007. Retrieved 15 March 2007.
  2. Llamas, B.; Brotherton, P.; Mitchell, K. J.; Templeton, J. E. L.; Thomson, V. A.; Metcalf, J. L.; Armstrong, K. N.; Kasper, M.; Richards, S. M.; Camens, A. B.; Lee, M. S. Y.; Cooper, A. (2014-12-18). "Late Pleistocene Australian marsupial DNA clarifies the affinities of extinct megafaunal kangaroos and wallabies". Molecular Biology and Evolution . 32 (3): 574–584. doi: 10.1093/molbev/msu338 . PMID   25526902.
  3. Kerr, Isaac A. R.; Prideaux, Gavin J. (2022-06-29). "A new genus of kangaroo (Marsupialia, Macropodidae) from the late Pleistocene of Papua New Guinea". Transactions of the Royal Society of South Australia. 146 (2): 295–318. Bibcode:2022TRSAu.146..295K. doi:10.1080/03721426.2022.2086518. ISSN   0372-1426. S2CID   250189771.
  4. Helgen, K.M.; Wells, R.T.; Kear, B.P.; Gerdtz, W.R. & Flannery, T.F. (2006). "Ecological and evolutionary significance of sizes of giant extinct kangaroos". Australian Journal of Zoology. 54 (#4): 293–303. doi:10.1071/ZO05077.
  5. Flannery, T.F.; Mountain, M-J.; Aplin, K. (1983). "Quaternary kangaroos (Macropodidae: Marsupialia) from Nombe rock shelter, Papua New Guinea, with comments on the nature of megafaunal extinction in the New Guinea highlands". Proceedings of the Linnean Society of New South Wales. 107 (2): 75–97.