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Ngapakaldia Temporal range: Late Oligocene
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Infraclass:	Marsupialia
Order:	Diprotodontia
Family:	†Diprotodontidae
Genus:	†Ngapakaldia R. A. Stirton, 1967
Species
†N. bonythoni Stirton, 1967 †N. tedfordi Stirton, 1967
Synonyms
†Bematherium Tedford, 1967

Ngapakaldia is an extinct genus of diprotodontid marsupials, related to the modern koala and wombat. Around the size of a sheep, it was a ground-dwelling herbivore that lived around the vegetated shores of lakes in Central Australia during the Late Oligocene.

The genus was established in 1967 by R. A. Stirton when describing a fossil species Ngapakaldia tedfordi. The name refers to the source of the type material, Lake Ngapakaldi, located in Lake Ngapakaldi to Lake Palankarinna Fossil Area in the Tirari Desert of central Australia.

Two species are placed with the genus, N. bonythoni and N. tedfordi.

References

1. Black, K. H. (2010). "Ngapakaldia bonythoni (Marsupialia, Diprotodontidae): new material from Riversleigh, northwestern Queensland, and a reassessment of the genus Bematherium". Alcheringa: An Australasian Journal of Palaeontology. 34 (4): 471–492. Bibcode:2010Alch...34..471B. doi:10.1080/03115511003793496. S2CID 128612993.
2. John A. Long, Michael Archer (2002). Prehistoric Mammals of Australia and New Guinea: One Hundred Million Years of Evolution. UNSW Press. p. 89. ISBN 0868404357.
3. "†Ngapakaldia Stirton 1967 (marsupial)". Paleobiology Database.

v t e Vombatiformes
Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Diprotodontia
†Thylacoleonidae Enigmaleo Lekaneleo Microleo Thylacoleo Wakaleo Phascolarctidae †Invictokoala †Koobor †Litokoala †Madakoala †Nimiokoala †Perikoala Phascolarctos †Priscakoala Vombatomorphia †Thylacoleonidae? †Ilariidae Ilaria Kuterintja †Wynyardiidae Muramura Namilamadeta Wynyardia Vombatoidea †Marada? †Mukupirna Vombatidae Lasiorhinus †Nimbavombatus †Phascolonus †Ramsayia †Rhizophascolonus †Sedophascolomys Vombatus †Warendja †Diprotodontoidea Palorchestidae Palorchestes Propalorchestes Diprotodontidae Alkwertatherium Ambulator Diprotodon Euowenia Euryzygoma Hulitherium Kolopsis Kolopsoides Maokopia Meniscolophus Neohelos Ngapakaldia Nimbadon Nototherium Pitikantia Plaisiodon Pyramios Raemeotherium Silvabestius Sthenomerus Zygomaturus

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