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Alphadon halleyi

Description

Alphadon (meaning "first tooth") was a genus of small, primitive mammal that was a member of the metatherians, a group of mammals that includes modern-day marsupials. Its fossils were first discovered and named by George Gaylord Simpson in 1929.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4975114https://www.gbif.org/species/4975114
PaleoBioDB ID (PBDB)43917https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=43917
Rankspecies
Taxonomy (GBIF)Life : Animalia : Chordata : Mammalia : Didelphimorphia : Didelphidae : Alphadon : Alphadon halleyi
Taxonomy (PBDB)Life : Animalia : Chordata : Mammalia : Didelphimorphia : Alphadontidae : Alphadon : Alphadon halleyi
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
subclassTheriaParker and Haswell 1897
subclassMetatheria
-Marsupialia
orderDidelphimorphiaGill 1872
familyAlphadontidaeMarshall et al. 1990
genusAlphadonSimpson 1927
speciesAlphadon halleyiSahni 1972
Generic NameAlphadon
Scientific NameAlphadon halleyi Sahni, 1972
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Alphadon halleyispeciesbelongs to Alphadonstated without evidenceSahni, 1972
Status (PBDB)extinct
Taxon Size (PBDB)1
First Recorded Appearance86.3 - 83.6 Ma
Late/Upper Cretaceous
Last Recorded Appearance70.6 - 66.0 Ma
Late/Upper Cretaceous
Environmentterrestrial (based on Mammalia)
Motilityactively mobile (based on Osteichthyes)
Dietomnivore (based on Alphadon)
Reproductionviviparous (based on Theria)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)A. Sahni. 1972. The vertebrate fauna of the Judith River Formation, Montana. Bulletin of the American Museum of Natural History 147(6):321-412
Wikipediahttps://en.wikipedia.org/wiki/Alphadon_halleyi

Fossil Distribution

Synonymy List

YearName and Author
1972Alphadon halleyi Sahni
1979Alphadon halleyi Clemens p. 193
1986Alphadon halleyi Lillegraven and McKenna p. 30
2001Alphadon halleyi Horner et al. p. 9
2004Alphadon halleyi Kielan-Jaworowska et al. pp. 443, 454-455

References

Sahni A. (1972) The vertebrate fauna of the Judith River Formation, Montana, Bulletin of the American Museum of Natural History 147 6, 321-412
Lillegraven J. A., McKenna M. C. (1986) Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages", American Museum Novitates 2840, 1-68
Horner J. R., Schmitt J. G., et al (2001) Bones and rocks of the Upper Cretaceous Two Medicine-Judith River clastic wedge complex, Montana, In C. L. Hill (ed), Society of Vertebrate Paleontology, 61st Annual Meeting, Bozeman. Guidebook for the Field Trips: Mesozoic and Cenozoic Paleontology in the Western Plains and Rocky Mountains, Museum of the Rockies Occasional Paper 3, 3-13
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
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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