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Lystrosaurus
Taxonomy
Lystrosaurus was named by Cope (1870). It is not extant. It was considered monophyletic by Maisch (2002).
It was assigned to Anomodontia by Broom (1913); to Dicynodontidae by Efremov (1940) and Sun (1973); to Lystrosaurini by King (1988), King and Jenkins (1997) and Battail and Surkov (2000); to Pristerodontia by Surkov et al. (2005); to Lystrosauridae by Kammerer and Angielczyk (2009); and to Lystrosauridae by Broom (1903), Cox (1965), Maisch (2002), Li and Sun (2008), Ivakhnenko (2008) and Kammerer et al. (2011).
It was assigned to Anomodontia by Broom (1913); to Dicynodontidae by Efremov (1940) and Sun (1973); to Lystrosaurini by King (1988), King and Jenkins (1997) and Battail and Surkov (2000); to Pristerodontia by Surkov et al. (2005); to Lystrosauridae by Kammerer and Angielczyk (2009); and to Lystrosauridae by Broom (1903), Cox (1965), Maisch (2002), Li and Sun (2008), Ivakhnenko (2008) and Kammerer et al. (2011).
Species
Dicynodon seeleyi, L. broomi, L. curvatus (syn. L. wageri, L. oviceps, L. platyceps, L. andersoni, L. theileri, L. jorisseni), L. declivis (syn. L. wagneri, Ptychognathus depressus, Ptychosiagum declivis, Ptychognathus alfredi, L. primitivus, Ptychognathus declivis, Dicynodon (Ptychognathus) declivis, Dicynodon (Ptychognathus) latirostris), L. georgi, L. hedini, L. maccaigi (syn. L. amphibius, L. putterilli), L. murrayi (syn. Prolystrosaurus natalensis, L. bothai, L. rajurkari, Dicynodon copei, Dicynodon (Ptychognathus) verticalis, L. jeppei, L. breyeri, Dicynodon orientalis, L. frontosus, Ptychognathus boopis, Ptychosiagum murrayi, L. rubidgei), L. robustus (syn. L. latifrons), L. shichanggouensis, L. weidenreichi, L. youngi, Prolystrosaurus strigops
Synonyms
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Synonymy list
Year | Name and author |
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1870 | Lystrosaurus Cope |
1890 | Ptychosiagum Lydekker |
1903 | Lystrosaurus Broom |
1908 | Dicynodon seeleyi Broili |
1913 | Dicynodon strigops Broom |
1913 | Lystrosaurus Broom |
1917 | Prolystrosaurus Haughton |
1917 | Prolystrosaurus strigops Haughton |
1939 | Lystrosaurus weidenreichi Young p. 127 figs. 1-9 |
1940 | Lystrosaurus Efremov p. 131 |
1965 | Lystrosaurus Cox |
1965 | Prolystrosaurus Cox |
1973 | Lystrosaurus Sun p. 65 |
1988 | Lystrosaurus King |
1997 | Lystrosaurus King and Jenkins p. 150 |
2000 | Lystrosaurus Battail and Surkov |
2002 | Lystrosaurus Maisch |
2005 | Lystrosaurus Surkov et al. |
2008 | Lystrosaurus Ivakhnenko |
2008 | Lystrosaurus Li and Sun p. 389 |
2008 | Lystrosaurus weidenreichi Li and Sun p. 392 |
2009 | Lystrosaurus Kammerer and Angielczyk |
2011 | Lystrosaurus Kammerer et al. |
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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.
G. †Lystrosaurus Cope 1870
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†Lystrosaurus broomi Young 1939
†Lystrosaurus curvatus Owen 1876
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Invalid names: Lystrosaurus andersoni Broom [synonym], Lystrosaurus jorisseni Van Hoepen 1916 [synonym], Lystrosaurus oviceps Haughton 1915 [synonym], Lystrosaurus platyceps Seeley 1898 [synonym], Lystrosaurus theileri Van Hoepen 1916 [synonym], Lystrosaurus wageri Van Hoepen 1916 [synonym]
†Lystrosaurus declivis Brink 1951
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Invalid names: Dicynodon (Ptychognathus) latirostris Owen 1860 [synonym], Lystrosaurus primitivus Toerien 1954 [synonym], Lystrosaurus wagneri Van Hoepen 1916 [synonym], Ptychognathus alfredi Owen 1862 [synonym], Ptychognathus declivis Owen 1860 [objective synonym], Ptychognathus depressus Owen 1876 [synonym], Ptychosiagum declivis Lydekker 1890 [objective synonym]
†Lystrosaurus georgi Kalandadze 1975
†Lystrosaurus hedini Young 1935
†Lystrosaurus maccaigi Seeley 1898
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Invalid names: Lystrosaurus amphibius Brink 1951 [synonym], Lystrosaurus putterilli Van Hoepen 1915 [synonym]
†Lystrosaurus murrayi Huxley 1859
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Invalid names: Dicynodon (Ptychognathus) verticalis Owen 1860 [synonym], Dicynodon copei Seeley 1889 [synonym], Dicynodon orientalis Huxley 1865 [synonym], Lystrosaurus bothai Broom 1941 [synonym], Lystrosaurus breyeri Van Hoepen 1915 [synonym], Lystrosaurus frontosus Cope 1870 [synonym], Lystrosaurus jeppei Van Hoepen 1916 [synonym], Lystrosaurus rajurkari Tripathi and Satsangi 1963 [synonym], Lystrosaurus rubidgei Broom 1940 [synonym], Prolystrosaurus natalensis Haughton 1917 [synonym], Ptychognathus boopis Owen 1876 [synonym], Ptychosiagum murrayi Lydekker 1890 [synonym]
†Lystrosaurus shichanggouensis Cheng 1986
†Lystrosaurus youngi Sun 1964
Invalid names: Dicynodon seeleyi Broili 1908 [nomen dubium], Lystrosaurus weidenreichi Young 1939 [nomen dubium], Prolystrosaurus Haughton 1917 [synonym], Prolystrosaurus strigops Broom 1913 [nomen dubium], Ptychosiagum Lydekker 1890 [synonym]
Diagnosis
Reference | Diagnosis | |
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M.W. Maisch 2002 | No ectopterygoid |