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Deltatheridium

Description

Deltatheridium (meaning triangle beast or delta beast) is an extinct species of metatherian. It lived in what is now Mongolia during the Upper Cretaceous, circa 80 million years ago. It was a basal metatherian, which places it near start of the lineage that led to the marsupials, such as kangaroos, wallabies, koalas, and opossums.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4827010https://www.gbif.org/species/4827010
PaleoBioDB ID (PBDB)39920https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=39920
Rankgenus
Taxonomy (GBIF)Life : Animalia : Chordata : Mammalia : Deltatheridiidae : Deltatheridium
Taxonomy (PBDB)Life : Animalia : Chordata : Mammalia : Deltatheridium
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
phylumChordataHaeckel 1847
subphylumVertebrataLamarck 1801
superclassGnathostomataGegenbauer 1874
-Osteichthyes
-SarcopterygiiRomer 1955
subclassDipnotetrapodomorpha
subclassTetrapodomorpha
-Tetrapoda
-ReptiliomorphaSäve-Söderbergh 1934
-AnthracosauriaSäve-Söderbergh 1934
-Batrachosauria
-Cotylosauria
-AmniotaHaeckel 1866
-SynapsidaOsborn 1903
-Therapsida
infraorderCynodontia
-EpicynodontiaHopson and Kitching 2001
infraorderEucynodontiaKemp 1982
-ProbainognathiaHopson 1990
-MammaliamorphaRowe 1988
-MammaliaformesRowe 1988
classMammaliaLinnaeus 1758
-Theriamorpha
-Theriiformes
-TrechnotheriaMcKenna 1975
-CladotheriaMcKenna 1975
-Boreosphenida
genusDeltatheridiumGregory & Simpson 1926
Scientific NameDeltatheridium Gregory & Simpson, 1926
Name Published InAmer. Mus. Novit., No. 225
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Deltatheridiumgenusbelongs to Deltatheridiidaestated without evidenceGregory and Simpson, 1926
Deltatheridiumgenusbelongs to Deltatheridiinaestated without evidenceVan Valen, 1967
Deltatheridiumgenusbelongs to Marsupialiastated without evidenceVan Valen, 1974
Deltatheridiumgenusbelongs to Deltatheridiidaestated without evidenceKielan-Jaworowska et al., 1979
Deltatheridiumgenusbelongs to DeltatheridiidaeimpliedMcKenna and Bell, 1997
Deltatheridiumgenusbelongs to Deltatheridiidaestated without evidenceAverianov, 1997
Deltatheridiumgenusbelongs to Metatheriastated without evidenceHorovitz, 2003
Deltatheridiumgenusbelongs to Deltatheridiidaestated without evidenceKielan-Jaworowska et al., 2004
Deltatheridiumgenusbelongs to Boreosphenidastated with evidenceMartin and Rauhut, 2005
Deltatheridiumgenusbelongs to Deltatheridiidaestated without evidenceAverianov et al., 2010
Deltatheridiumgenusbelongs to Metatheriastated without evidenceLadaveze and Muizon, 2010
Deltatheridiumgenusbelongs to Deltatheroidastated without evidenceBi et al., 2015
Status (PBDB)extinct
Taxon Size (PBDB)5
First Recorded Appearance83.6 - 72.1 Ma
Late/Upper Cretaceous
Last Recorded Appearance83.5 - 70.6 Ma
Late/Upper Cretaceous
Environmentterrestrial (based on Mammalia)
Motilityactively mobile (based on Osteichthyes)
Dietcarnivore
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)W. K. Gregory and G. G. Simpson. 1926. Cretaceous mammal skulls from Mongolia. American Museum Novitates 225:1-20
Wikipediahttps://en.wikipedia.org/wiki/Deltatheridium

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Deltatheridium nessovi
species
accepted (GBIF)
listed (PBDB)
183.5 Ma
Late/Upper Cretaceous
83.5 Ma
Late/Upper Cretaceous
Deltatheridium pretrituberculare
species
accepted (GBIF)
listed (PBDB)
683.6 Ma
Late/Upper Cretaceous
83.5 Ma
Late/Upper Cretaceous

Synonymy List

YearName and Author
1926Deltatheridium Gregory and Simpson pp. 6-7 figs. 1A-B, 2-8
1928Deltatheridium Simpson p. 2
1967Deltatheridium Van Valen
1974Deltatheridium Van Valen
1979Deltatheridium Kielan-Jaworowska et al. p. 183
1997Deltatheridium Averianov p. 246
1997Deltatheridium McKenna and Bell
YearName and Author
2003Deltatheridium Horovitz
2004Deltatheridium Kielan-Jaworowska et al. pp. 411, 445-446 figs. 12.4A-D, 12.7A
2005Deltatheridium Martin and Rauhut
2010Deltatheridium Averianov et al. p. 303
2010Deltatheridium Ladaveze and Muizon
2015Deltatheridium Bi et al.

References

Gregory W. K., Simpson G. G. (1926) Cretaceous mammal skulls from Mongolia, American Museum Novitates 225, 1-20
Simpson G. G. (1928) Further notes on Mongolian Cretaceous mammals, American Museum Novitates 329, 1-14
Van Valen L. (1967) New Paleocene insectivores and insectivore classification, Bulletin of the American Museum of Natural History 135 5, 217-284
Averianov A. O. (1997) New Late Cretaceous mammals of southern Kazakhstan, Acta Palaeontologica Polonica 42 2, 243-256
McKenna M. C., Bell S. K. (1997) , Classification of Mammals Above the Species Level, 1-640
Horovitz I. (2003) Postcranial skeleton of Ukhaatherium nessovi (Eutheria, Mammalia) from the Late Cretaceous of Mongolia, Journal of Vertebrate Paleontology 23 4, 857-868
Kielan-Jaworowska Z., Cifelli R. L., et al (2004) Mammals from the age of dinosaurs: Origins, evolution, and structure, Columbia University Press, New York, 1-630
Martin T., Rauhut O. W. M. (2005) Mandible and dentition of Asfaltomylos patagonicus (Australosphenida, Mammalia) and the evolution of tribosphenic teeth, Journal of Vertebrate Paleontology 25 2, 414-425
Averianov A. O., Archibald J. D., et al (2010) New material of the Late Cretaceous deltatheroidan mammal Sulestes from Uzbekistan and phylogenetic reassessment of the metatherian-eutherian dichotomy, Journal of Systematic Palaeontology 8 3, 301-330 doi:10.1080/14772011003603499
Ladaveze S., Muizon C. (2010) Evidence of early evolution of Australidelphia (Metatheria, Mammalia) in South America: phylogenetic relationships of the metatherians from the Late Palaeocene of Itaboraí (Brazil) based on teeth and petrosal bones, Zoological Journal of the Linnean Society 159 3, 746-784
Bi S., Jin X., et al (2015) A new Cretaceous metatherian mammal from Henan, China, PeerJ 3, e896 doi:10.7717/peerj.896
Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera
SN2000/McKenna & Bell, 1997 - via The Interim Register of Marine and Nonmarine Genera
SN2000: Brands, S. J. (compiler) 1989-2005. Systema Naturae 2000. Amsterdam, The Netherlands (2006 version). Available online at http://sn2000.taxonomy.nl/. - via The Interim Register of Marine and Nonmarine Genera
as per family - via The Interim Register of Marine and Nonmarine Genera
Amer. Mus. Novit., No. 225 - via The Interim Register of Marine and Nonmarine Genera
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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