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Lystrosauridae

- Lystrosauridae

Synonymy list
YearName and author
1903Lystrosauridae Broom p. 294
1904Lystrosauridae Osborn p. 103
1954Lystrosauridae Haughton and Brink p. 6
1982Lystrosauridae Kemp p. 348
1988Lystrosauridae Carroll
2008Lystrosauridae Ivakhnenko
2008Lystrosauridae Li and Sun p. 389
2009Lystrosauridae Kammerer and Angielczyk
2011Lystrosauridae Kammerer et al. p. 140

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
RankNameAuthor
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Synapsida()
Therapsida()
Anomodontia(Owen 1859)
Chainosauria()
Dicynodontia(Owen 1859)
Bidentalia()
DicynodontoideaCluver and King 1983
familyLystrosauridae
familyLystrosauridae

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.

Diagnosis
ReferenceDiagnosis
R. Broom 1903Dentition as in Dicynodontidae. A pair ol poslfrontals present; also a distinct preparietal bone. Interclavicle small. No cleithrum.
C. F. Kammerer and K. D. Angielczyk 2009As currently defined, Lystrosauridae includes only the genera Lystrosaurus and Kwazulusaurus. The latter taxon has only been included in one phylogenetic analysis (Maisch, 2002a). Therefore, in addition to listing autapomorphies from the analyses of Angielczyk (2007), Fröbisch (2007), and Fröbisch & Reisz (2008), we also include autapomorphies identified by Maisch (2002a). Maisch (2002a) identified two autapomorphies of Lystrosauridae: (1) ectopterygoid absent; (2) snout region short and deep, strongly extended ventrally. Autapomorphies recognized in common by Angielczyk (2007), Fröbisch (2007), and Fröbisch & Reisz (2008) are: (1) parietals widely exposed on the skull roof; (2) anterior portion of the palatine does not contact the premaxilla. Cluver (1971) provided a detailed diagnosis of Lystrosaurus in his thorough treatment of the cranial morphology of the genus, and Maisch (2002a) presented the only diagnosis of Kwazulusaurus to date. The most distinctive character of lystrosaurids is the steeply downturned snout, although this feature is more strongly developed in Lystrosaurus than Kwazulusaurus.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialuc
Locomotion: actively mobilec
Diet: herbivoresubo
Created: 2009-01-03 20:33:45
Modified: 2009-01-03 22:33:45
Source: subo = suborder, c = class, subp = subphylum, uc = unranked clade
References: Kiessling 2004, Benton 1983, Carroll 1988, Hendy et al. 2009

Age range: base of the Wuchiapingian to the top of the Induan or 259.90000 to 251.20000 Ma

Collections (62 total)


Time interval Ma Country or state Original ID and collection number
Wuchiapingian259.9 - 254.17Tanzania (Ruvuma) Dicynodon bathyrhynchus (181520)
Wuchiapingian - Changhsingian259.9 - 252.17South Africa (KwaZulu-Natal) Kwazulusaurus shakai (176319)
Wuchiapingian - Changhsingian259.9 - 252.17South Africa (Eastern Cape) Lystrosaurus maccaigi (176312) Lystrosaurus rubidgei (176336)
Changhsingian254.17 - 252.17South Africa (Eastern Cape) Lystrosaurus maccaigi (119437)
Changhsingian254.17 - 252.17China (Xinjiang) Lystrosaurus robustus, Lystrosaurus latifrons (178201)
Changhsingian254.17 - 252.17South Africa (Free State) Lystrosaurus maccaigi (195279 195280)
Induan252.17 - 251.2China (Xinjiang) Lystrosaurus hedini (143485) Lystrosaurus hedini, Lystrosaurus murrayi (143474) Lystrosaurus shichanggouensis (196534) Lystrosaurus youngi (112284 143481)
Induan252.17 - 251.2South Africa (Eastern Cape) Dicynodon curvatus, Lystrosaurus murrayi, Lystrosaurus maccaigi, Lystrosaurus declivis (176503) Dicynodon latirostris, Dicynodon verticalis, Lystrosaurus murrayi, Ptychognathus alfredi, Lystrosaurus curvatus, Lystrosaurus declivis (144320) Dicynodon seeleyi (178125) Lystrosaurus declivis (195281)
Induan252.17 - 251.2Russian Federation (Nizhnii Novgorod) Lystrosaurus georgi (189460)
Induan252.17 - 251.2South Africa (Free State) Lystrosaurus murrayi, Lystrosaurus curvatus, Lystrosaurus declivis (195278) Lystrosaurus murrayi, Lystrosaurus oviceps, Lystrosaurus curvatus, Lystrosaurus declivis (80140) Lystrosaurus sp., Lystrosaurus murrayi, Lystrosaurus declivis (144333)
Induan252.17 - 251.2South Africa (Northern Cape) Dicynodon murrayi (177589) Lystrosaurus murrayi, Lystrosaurus declivis (105718)
Early/Lower Triassic252.17 - 247.2South Africa (Eastern Cape) Lystrosaurus amphibius, Lystrosaurus primitivus (196533) Lystrosaurus bothai (196535) Lystrosaurus murrayi, Lystrosaurus curvatus, Lystrosaurus declivis (105606) Lystrosaurus murrayi, Lystrosaurus declivis (117176 117184)
Early/Lower Triassic252.17 - 247.2South Africa Lystrosaurus sp. (190132)
Early/Lower Triassic252.17 - 247.2South Africa (Kwazulu-Natal) Lystrosaurus murrayi, Lystrosaurus oviceps, Lystrosaurus declivis (105603)
Early/Lower Triassic252.17 - 247.2South Africa (East Cape) Lystrosaurus sp. (188978)
Early/Lower Triassic252.17 - 247.2South Africa (Free State) Lystrosaurus murrayi, Lystrosaurus maccaigi, Lystrosaurus platyceps, Lystrosaurus curvatus, Lystrosaurus declivis (117183)
Early/Lower Triassic252.17 - 247.2Antarctica Lystrosaurus curvatus (87414) Lystrosaurus maccaigi (27265 27266)
Induan - Olenekian252.17 - 247.2South Africa (Free State) Lystrosaurus murrayi (181689) Lystrosaurus murrayi, Lystrosaurus curvatus, Lystrosaurus declivis (98602) Lystrosaurus murrayi, Lystrosaurus declivis (105607) Lystrosaurus murrayi, Lystrosaurus maccaigi, Lystrosaurus breyeri, Lystrosaurus putterilli, Lystrosaurus jeppei, Lystrosaurus wageri, Lystrosaurus wagneri, Lystrosaurus jorisseni, Lystrosaurus theileri, Lystrosaurus curvatus, Lystrosaurus declivis, Dicynodon strigops (88282) Lystrosaurus murrayi, Lystrosaurus maccaigi, Lystrosaurus declivis (181690) Lystrosaurus murrayi, Lystrosaurus platyceps (144326)
Induan - Olenekian252.17 - 247.2South Africa (Eastern Cape) Lystrosaurus murrayi, Lystrosaurus curvatus, Lystrosaurus declivis (177605) Lystrosaurus murrayi, Lystrosaurus maccaigi, Lystrosaurus curvatus, Lystrosaurus declivis (105610) Lystrosaurus murrayi, Lystrosaurus oviceps, Lystrosaurus declivis (85948) Lystrosaurus murrayi, Lystrosaurus platyceps, Lystrosaurus curvatus, Lystrosaurus declivis (181691)
Induan - Olenekian252.17 - 247.2South Africa (KwaZulu-Natal) Lystrosaurus murrayi, Lystrosaurus curvatus, Lystrosaurus declivis (34815)
Induan - Smithian252.17 - 247.2India (West Bengal) Dicynodon orientalis (117188) Lystrosaurus maccaigi (174085) Lystrosaurus murrayi (136562 136564 136565) Lystrosaurus murrayi, Lystrosaurus maccagi (136560) Lystrosaurus murrayi, Lystrosaurus rajurkari, Lystrosaurus platyceps (136563) Lystrosaurus orientalis (98624 136552 136553 136555 136556 136557 136558 136559) Lystrosaurus sp. (117187)