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Leptictinae

Mammalia - Leptictidae

Synonyms
Synonymy list
YearName and author
1872Leptictinae Gill
1879Diacodontinae Trouessart
1930Leptictinae Hay p. 430
1967Leptictinae Van Valen
2010Leptictinae Meehan and Martin p. 102
2016Leptictinae Velazco and Novacek p. 4

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
RankNameAuthor
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Theriamorpha(Rowe 1993)
—Theriiformes()
—Trechnotheria
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
superorderLeptictida
familyLeptictidaeGill 1872
subfamilyLeptictinaeGill 1872
subfamilyLeptictinaeGill 1872

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Subfm. †Leptictinae Gill 1872
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G. †Acmeodon Matthew and Granger 1921
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†Acmeodon secans Matthew and Granger 1921
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Invalid names: Acmeodon hyoni Rigby, Jr. 1980 [synonym]
G. †Hypictops Gazin 1949
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†Hypictops syntaphus Gazin 1949
G. †Leptictis Leidy 1868
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†Leptictis acutidens Douglass 1902
†Leptictis bullatus Matthew 1899
†Leptictis dakotensis Leidy 1868
†Leptictis douglassi Novacek 1976
†Leptictis haydeni Leidy 1868
†Leptictis montanus Douglass 1905
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Invalid names: Ictops intermedius Douglass 1905 [synonym], Ictops tenuis Douglass 1905 [synonym]
†Leptictis thomsoni Matthew 1903
†Leptictis wilsoni Novacek 1976
Invalid names: Ictidops Winge 1917 [synonym], Ictops Leidy 1868 [synonym], Ictops major Douglass 1905 [nomen dubium], Isacis Cope 1873 [synonym], Isacis caniculus Cope 1873 [nomen dubium]
G. †Megaleptictis Meehan and Martin 2012
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†Megaleptictis altidens Meehan and Martin 2012
G. †Mesodectes Cope 1875
G. †Xenacodon Matthew and Granger 1921
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†Xenacodon mutilatus Matthew and Granger 1921
Invalid names: Diacodontinae Trouessart 1879 [synonym]
Diagnosis
ReferenceDiagnosis
P. M. Velazco and M. J. Novacek 2016Leptictids with large, distinct hypocones on P5 (vestigial or absent in nonleptictines). Anteroposteriorly more elongated P5 and upper molars with lower para- cones, protocones, and metacones (taller cusps in nonleptictines). Upper molars with slightly more labially situated conules, absence of a twinned paraconule, and variably developed ecto- exi, but less deeply infolded than in nonleptictines. Upper molar parastylar spurs poorly developed. Elongated p5, with large, projecting paraconid. Skeletons (known in Leptictis dako- tensis and Palaeictops matthewi) with distinct distal fusion of tibia and bula, head of humerus semilunar with sharply de ned medial border, head of femur strongly canted to long axis of sha , and deep trochanteric fossa of femur.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: insectivoref
Diet 2: carnivoref
Reproduction: viviparoussubc
Created: 2011-04-16 19:28:33
Modified: 2011-04-16 04:29:22
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009, Lillegraven 1979, Ji et al. 2002, Meehan and Martin 2010

Age range: base of the Tiffanian to the top of the Whitneyan or 61.70000 to 30.80000 Ma

Collections (45 total)


Time interval Ma Country or state Original ID and collection number
Torrejonian63.8 - 60.9USA (New Mexico) Acmeodon secans (14815 14816 14833 14868 14893 187009)
Torrejonian63.8 - 60.9USA (Utah) Acmeodon sp. (14830)
Torrejonian63.8 - 60.9USA (Wyoming) Acmeodon hyoni (14886) Acmeodon secans (14881 14896 14898 14899 14905)
Torrejonian - Tiffanian63.8 - 56.8USA (Wyoming) Acmeodon secans (14858)
Tiffanian61.7 - 56.8USA (Wyoming) Acmeodon hyoni (14983 198264) Acmeodon secans (15012 15013 15014 15015 15016)
Tiffanian61.7 - 56.8USA (Colorado) Xenacodon mutilatus (14967)
Tiffanian61.7 - 56.8USA (Montana) Acmeodon sp. (14937 15047) Palaeoryctidae indet. (15025)
Duchesnean39.7 - 37.0USA (Texas) Leptictis douglassi (16835)
Priabonian38.0 - 33.9Spain (Catalonia) Leptictis sp. (31751)
Chadronian37.2 - 33.9USA (Texas) Leptictis wilsoni (17016)
Chadronian37.2 - 33.9USA (South Dakota) Ictops dakotensis (17006 17007)
Chadronian37.2 - 33.9USA (North Dakota) Leptictis sp. (16991)
Chadronian37.2 - 33.9USA (Montana) Ictops magnus, Ictops montanus, Leptictis montanus (16990)
Chadronian37.2 - 33.9USA (Wyoming) Leptictis dakotensis (16942 16943)
Late/Upper Chadronian37.2 - 33.9USA (Montana) Leptictis sp. (17027)
Chadronian - Orellan37.2 - 33.3USA (South Dakota) Megaleptictis altidens (154199)
Late/Upper Chadronian - Orellan37.2 - 33.3USA (Nebraska) Leptictis dakotensis (230806)
Orellan33.9 - 33.3USA (Wyoming) Leptictis dakotensis (17104 17105 17106)
Orellan33.9 - 33.3USA (South Dakota) Ictops dakotensis (17133) Leptictis haydeni (17295) Megaleptictis altidens (163487)
Orellan33.9 - 33.3USA (North Dakota) Leptictis dakotensis (17100)
Whitneyan33.3 - 30.8USA (South Dakota) Leptictis dakotensis (17336)