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Leptaucheniinae

Mammalia - Merycoidodontidae

Synonymy list
YearName and author
1940Leptaucheniinae Schultz and Falkenbach p. 215
1968Leptaucheniinae Schultz and Falkenbach p. 227
1996Leptaucheniinae Stevens and Stevens p. 510
1997Leptaucheniinae McKenna and Bell p. 409
2007Leptaucheniinae Stevens and Stevens p. 159

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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
—Therapsida()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
suborderTylopoda()
familyMerycoidodontidae
subfamilyLeptaucheniinaeSchultz and Falkenbach 1940
subfamilyLeptaucheniinaeSchultz and Falkenbach 1940

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. †Leptaucheniinae Schultz and Falkenbach 1940
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G. †Leptauchenia Leidy 1856
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Subg. †Leptauchenia (Sespia) Stock 1930
†Leptauchenia decora Leidy 1856
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Invalid names: Cyclopidius (Chelonocephalus) schucherti Thorpe 1921 [synonym], Cyclopidius loganensis Koerner 1940 [synonym], Hadroleptauchenia eiseleyi Schultz and Falkenbach 1968 [synonym], Hadroleptauchenia primitiva Schultz and Falkenbach 1968 [synonym], Leptauchenia harveyi Schultz and Falkenbach 1968 [synonym], Leptauchenia martini Schultz and Falkenbach 1968 [synonym], Leptauchenia minora Schlaikjer 1935 [synonym], Leptauchenia parasimus Schultz and Falkenbach 1968 [synonym], Pithecistes altageringensis Schultz and Falkenbach 1968 [synonym], Pithecistes brevifacies Cope 1877 [synonym], Pithecistes copei Schultz and Falkenbach 1968 [synonym], Pithecistes decedens Cope 1884 [synonym], Pithecistes facies Cope 1888 [synonym], Pithecistes mariae Schultz and Falkenbach 1968 [synonym], Pithecistes tanneri Schultz and Falkenbach 1968 [synonym], Pseudocyclopidius orellaensis Schultz and Falkenbach 1968 [synonym]
†Leptauchenia lullianus Thorpe 1921
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Invalid names: Cyclopidius quadratus Koerner 1940 [synonym], Pseudocyclopidius lullianus expiratus Schultz and Falkenbach 1968 [synonym]
†Leptauchenia major Leidy 1856
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Invalid names: Brachymeryx feliceps Cope 1877 [synonym], Cyclopidius emydinus Cope 1884 [synonym], Cyclopidius incisivus Scott 1893 [synonym], Cyclopidius simus Cope 1877 [synonym], Hadroleptauchenia extrema Schultz and Falkenbach 1968 [synonym], Hadroleptauchenia shanafeltae Schultz and Falkenbach 1968 [synonym], Leptauchenia densa Loomis 1925 [synonym], Leptauchenia margeryae Schultz and Falkenbach 1968 [synonym], Pseudocyclopidius frankforteri Schultz and Falkenbach 1968 [synonym]
Invalid names: Brachymeryx Cope 1877 [synonym], Cyclopidius Cope 1877 [synonym], Hadroleptauchenia Schultz and Falkenbach 1968 [synonym], Pithecistes Cope 1877 [synonym], Pseudocyclopidius Schultz and Falkenbach 1968 [synonym], Pseudoleptauchenia Unknown [objective synonym]
G. †Limnenetes Douglass 1902
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†Limnenetes platyceps Douglass 1902
G. †Sespia Stock 1930
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†Sespia californica Stock 1930
†Sespia heterodon Cope 1877
†Sespia nitida Leidy 1869
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Invalid names: Sespia marianae Schultz and Falkenbach 1968 [synonym]
†Sespia ultima Schultz and Falkenbach 1968
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Invalid names: Megasespia middleswarti Schultz and Falkenbach 1968 [synonym]
Tr. †Sespiini Schultz and Falkenbach 1968
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G. †Megasespia Schultz and Falkenbach 1968
Invalid names: Leptaucheniini Schultz and Falkenbach 1968 [empty]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialo
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: herbivoref
Reproduction: viviparoussubc
Created: 2005-08-31 14:37:21
Modified: 2005-08-31 16:37:21
Source: f = family, o = order, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Lillegraven 1979, Nowak 1999, Carroll 1988, Lander 1998

Age range: base of the Chadronian to the top of the Monroecreekian or 37.00000 to 23.10000 Ma

Collections (181 total)


Time interval Ma Country or state Original ID and collection number
Chadronian37.0 - 33.9USA (Texas) Limnenetes platyceps (16888 16890)
Chadronian37.0 - 33.9USA (Montana) Limnenetes platyceps (17028) Limnenetes sp. (16990)
Early/Lower Chadronian37.0 - 33.9USA (Montana) Limnenetes platyceps (27245)
Orellan33.9 - 31.8USA (Nebraska) Hadroleptauchenia eiseleyi, Pithecistes tanneri (17135) Leptauchenia decora (17096) Pseudocyclopidius orellaensis (17206)
Orellan33.9 - 31.8USA (Wyoming) Leptauchenia sp. (17064) Pseudocyclopidius orellaensis (17104)
Orellan33.9 - 31.8USA (South Dakota) Hadroleptauchenia eiseleyi (17169) Leptauchenia sp. (17187 17189 17190)
Whitneyan31.8 - 29.5USA (Wyoming) Leptauchenia decora (17335)
Whitneyan31.8 - 29.5USA (Colorado) Leptauchenia decora (17426)
Whitneyan31.8 - 29.5USA (South Dakota) Leptauchenia decora (17336 17337 17338 17360) Leptauchenia decora, Hadroleptauchenia primitiva (17317 17339 17343 17380) Leptauchenia sp. (17358 17384) Pseudocyclopidius frankforteri (17329 17378)
Whitneyan31.8 - 29.5USA (North Dakota) Leptauchenia decora (17432) Leptaucheniinae indet. (17320)
Whitneyan31.8 - 29.5USA (Nebraska) Hadroleptauchenia primitiva (17407) Hadroleptauchenia primitiva, Hadroleptauchenia shanafeltae, Leptauchenia decora (17374) Hadroleptauchenia primitiva, Hadroleptauchenia shanafeltae, Leptauchenia decora, Pithecistes tanneri (17401) Hadroleptauchenia primitiva, Hadroleptauchenia shanafeltae, Megasespia middleswarti, Pithecistes tanneri, Pseudocyclopidius major (17398) Hadroleptauchenia primitiva, Leptauchenia decora, Pithecistes tanneri, Pseudocyclopidius frankforteri (17419) Leptauchenia decora (17311 17333 17354 17373 17375 17392 17394 17397 17399 17411 17415) Leptauchenia decora, Hadroleptauchenia primitiva (17402 17413 17422 17424) Leptauchenia decora, Pseudocyclopidius frankforteri (17386 17417) Leptauchenia harveyi (17409 17410 17416 17418) Pithecistes mariae (17319) Pithecistes tanneri (17395 17430) Pithecistes tanneri, Hadroleptauchenia primitiva (17403)
Whitneyan - Arikareean31.8 - 18.5USA (Nebraska) Pseudocyclopidius major (17716)
Geringian29.5 - 24.7USA (Montana) Cyclopidius emydinus, Cyclopidius quadratus (17722)
Geringian29.5 - 24.7USA (Nebraska) Hadroleptauchenia densa (17482 17576) Hadroleptauchenia shanafeltae (17577 17714) Leptauchenia martini (17488 17575 17697) Leptauchenia martini, Pseudocyclopidius major (17595) Leptauchenia parasimus, Hadroleptauchenia shanafeltae (17728) Leptaucheniinae indet. (17440) Megasespia middleswarti (17474 17591 17712 17721) Pseudocyclopidius lullianus (17713) Pseudocyclopidius major (17570 17694 17710 17720) Pseudocyclopidius major, Sespia marianae (17525 17707) Sespia nitida (17521) Sespia nitida, Pithecistes mariae (17687) Sespia sp. (17715)
Geringian29.5 - 24.7USA (South Dakota) Cyclopidius schucherti (17624 17630 17647) Cyclopidius schucherti, Cyclopidius simus (17641) Cyclopidius simus (17636 17637 17644 17653) Hadroleptauchenia extrema (17593) Hadroleptauchenia shanafeltae (17668) Hadroleptauchenia shanafeltae, Leptauchenia martini (17589) Leptauchenia martini (17501 17665 17693) Leptauchenia martini, Pseudocyclopidius major (17592) Leptaucheniinae indet. (17459) Pithecistes copei, Pseudocyclopidius lullianus (17505) Pithecistes mariae, Pseudocyclopidius major (17663) Sespia nitida (17639)
Geringian29.5 - 24.7USA (Wyoming) Pithecistes altageringensis, Pseudocyclopidius lullianus (17446)
Arikareean29.5 - 18.5USA (Colorado) Pseudocyclopidius major, Sespia marianae (17500)
Arikareean29.5 - 18.5USA (Nebraska) Hadroleptauchenia densa (17530) Hadroleptauchenia shanafeltae, Leptauchenia martini (17572) Hadroleptauchenia shanafeltae, Leptauchenia martini, Pseudocyclopidius major (17717) Hadroleptauchenia shanafeltae, Pseudocyclopidius major, Sespia marianae (17568) Leptauchenia decora (17531 17580 17594) Leptauchenia decora, Leptauchenia nitida (17510) Leptauchenia decora, Pseudocyclopidius major (17538) Leptauchenia margeryae, Pseudocyclopidius lullianus (17569) Leptauchenia martini (17573) Leptauchenia parasimus (17503 17604) Leptauchenia parasimus, Sespia nitida (17718) Leptauchenia sp. (17539) Pseudocyclopidius lullianus (17477 17669 17692) Pseudocyclopidius major, Sespia marianae (17473 17602) Pseudocyclopidius major, Sespia marianae, Pithecistes mariae (17598) Sespia nitida (17689) Sespia sp., Cyclopidius densa (17515) Sespia sp., Cyclopidius shanafeltae (17514) Sespia sp., Leptauchenia sp. (17513) Sespia sp., Pseudocyclopidius major (17719)
Arikareean29.5 - 18.5USA (South Dakota) Hadroleptauchenia shanafeltae (17520 17606) Leptauchenia decora, Leptauchenia major, Leptauchenia nitida (17496) Leptauchenia martini (17483) Leptauchenia parasimus, Sespia nitida (17578) Leptauchenia sp. (17450 17452 17453) Sespia nitida (17517 17725)
Arikareean29.5 - 18.5USA (Montana) Cyclopidius heterodon, Cyclopidius loganensis (17509) Cyclopidius simus (17478)
Arikareean29.5 - 18.5USA (California) Leptauchenia californica (17684) Leptaucheniinae indet. (17672 17673 17675 17682) Sespia californica (17497 17678 17679 17680 17681) Sespia sp. (17674) Sespia sp., Leptaucheniinae indet., Sespia californica (17670)
Arikareean29.5 - 18.5USA (Wyoming) Cyclopidius densa (17467) Cyclopidius heterodon (17468) Cyclopidius lullianus, Leptauchenia decora, Leptauchenia parasimus, Pithecistes altageringensis, Cyclopidius heterodon (17667) Cyclopidius lullianus, Pithecistes copei, Sespia ultima (17472) Cyclopidius sp. (17666) Hadroleptauchenia densa, Leptauchenia parasimus (17502) Hadroleptauchenia densa, Leptauchenia parasimus, Megasespia middleswarti, Pithecistes altageringensis, Pseudocyclopidius lullianus, Sespia nitida (17703) Hadroleptauchenia densa, Pithecistes altageringensis, Sespia nitida (17532) Hadroleptauchenia extrema (17686) Leptauchenia major, Sespia nitida (17727) Leptauchenia minora (17466) Leptauchenia nitida (17463) Leptauchenia parasimus (17571) Pseudocyclopidius lullianus, Sespia nitida (17698) Sespia nitida (17511)
early Early Arikareean29.5 - 18.5USA (Nebraska) Leptauchenia major (156729)
early Early Arikareean29.5 - 18.5USA (California) Sespia nitida (167846 167847)
early Early Arikareean - late Early Arikareean29.5 - 18.5USA (Wyoming) Hadroleptauchenia densa (17691)
Late/Upper Oligocene27.3 - 23.04USA (South Dakota) Cyclopidius schucherti (17951)
Monroecreekian24.7 - 23.1Canada (Saskatchewan) Sespia sp. (17526)
Monroecreekian24.7 - 23.1USA (South Dakota) Leptauchenia sp. (69921) Pithecistes altageringensis (17547)
Monroecreekian - Harrisonian24.7 - 18.5USA (Nebraska) Pithecistes copei, Pseudocyclopidius lullianus (17704)