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Leptalestes

Description

Leptalestes is an extinct genus of mammals in the infraclass Metatheria. It was described by B.M. Davis in 2007. A new species, L. toevsi, was described from the late Cretaceous period of the United States by John P. Hunter, Ronald E. Heinrich, and David B. Weishampel in 2010.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4975094https://www.gbif.org/species/4975094
PaleoBioDB ID (PBDB)103961https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=103961
Rankgenus
Taxonomy (GBIF)Life : Animalia : Chordata : Mammalia : Pediomyidae : Leptalestes
Taxonomy (PBDB)Life : Animalia : Chordata : Mammalia : Pediomyidae : Leptalestes
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
-Peradectidae
-Pediomyidae
genusLeptalestesDavis 2007
Scientific NameLeptalestes Davis, 2007
Name Published InActa Palaeontologica Polonica 52.
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Leptalestesgenusbelongs to Pediomyidaestated with evidenceDavis, 2007
Leptalestesgenusbelongs to Pediomyidaestated without evidenceWilson et al., 2010
Leptalestesgenusbelongs to Pediomyidaestated with evidenceWilliamson et al., 2012
Status (PBDB)extinct
Taxon Size (PBDB)5
First Recorded Appearance86.3 - 83.6 Ma
Late/Upper Cretaceous
Last Recorded Appearance66.0 - 63.3 Ma
Paleocene
Environmentterrestrial (based on Mammalia)
Motilityactively mobile (based on Osteichthyes)
Dietomnivore (based on Metatheria)
Reproductionviviparous (based on Theria)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)B. M. Davis. 2007. A revision of “pediomyid” marsupials from the Late Cretaceous of North America. Acta Palaeontologica Polonica 52(2):217-256
Wikipediahttps://en.wikipedia.org/wiki/Leptalestes

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Leptalestes toevsi
species
accepted (GBIF)
listed (PBDB)
170.6 Ma
Late/Upper Cretaceous
70.6 Ma
Late/Upper Cretaceous
Pediomys cooki
species
accepted (GBIF)
listed (PBDB)
2183.5 Ma
Late/Upper Cretaceous
66.0 Ma
Late/Upper Cretaceous
Pediomys krejcii
species
accepted (GBIF)
listed (PBDB)
2370.6 Ma
Late/Upper Cretaceous
70.6 Ma
Late/Upper Cretaceous
Pediomys prokrejcii
species
accepted (GBIF)
listed (PBDB)
683.5 Ma
Late/Upper Cretaceous
70.6 Ma
Late/Upper Cretaceous

Synonymy List

YearName and Author
2007Leptalestes Davis p. 235
2010Leptalestes Hunter et al. p. 892
2010Leptalestes Wilson et al. p. 513
2012Leptalestes Williamson et al.

References

Davis B. M. (2007) A revision of “pediomyid” marsupials from the Late Cretaceous of North America, Acta Palaeontologica Polonica 52 2, 217-256
Hunter J. P., Heinrich R. E., et al (2010) Mammals from the St. Mary River Formation (Upper Cretaceous), Montana, Journal of Vertebrate Paleontology 30 3, 885-898
Wilson G. P., Dechesne M., et al (2010) New latest Cretaceous mammals from northeastern Colorado with biochronologic and biogeographic implications, Journal of Vertebrate Paleontology 30 2, 499-520
Williamson T. E., Brusatte S. L., et al (2012) The phylogeny and evolution of Cretaceous–Palaeogene metatherians: cladistic analysis and description of new early Palaeocene specimens from the Nacimiento Formation, New Mexico, Journal of Systematic Palaeontology 10 4, 625-651
Acta Palaeontologica Polonica 52. - via The Interim Register of Marine and Nonmarine Genera
Article title: A revision of "pediomyid" marsupials from the Late Cretaceous of North America. - via The Interim Register of Marine and Nonmarine Genera
inferred from original work (title) - via The Interim Register of Marine and Nonmarine Genera
refer original publication - via The Interim Register of Marine and Nonmarine Genera
www.organismnames.com (Jul 2012) / web search - 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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