Anomodont












Anomodonts
Temporal range: Middle Permian-Late Triassic, 270–201 Ma (Possible Early Cretaceous record.)[1]

PreЄ

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O

S

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Lystrosaurus 1.JPG
Mounted skeleton of Lystrosaurus

Scientific classification e
Kingdom:

Animalia
Phylum:

Chordata
Order:

Therapsida

Clade:

Neotherapsida
Suborder:

†Anomodontia
Owen, 1859
Subgroups

See text





Anomocephalus





Otsheria





Aulacocephalodon





Kannemeyeria


Anomodontia is an extinct group of non-mammalian therapsids containing many species from the Permian and Triassic periods (possibly continuing into the Early Cretaceous),[2] most of which were toothless, possibly endothermic[3][4][5]herbivores.[6] Anomodonts were very diverse during the Middle Permian, including primitive forms like Anomocephalus and Patranomodon and groups like Venyukovioidea, Dromasauria, and Dicynodontia. Of these, only the dicynodonts survived beyond the Middle Permian. Dicynodonts became the most successful and abundant of all herbivores in the Late Permian and Triassic, filling ecological niches ranging from large browsers down to small burrowers. Few dicynodont families survived the Permian–Triassic extinction event, but one lineage evolved into large, stocky forms that remained the dominant terrestrial herbivores right until the Late Triassic, when changing conditions caused them to decline.




Contents





  • 1 Classification

    • 1.1 Taxonomy


    • 1.2 Phylogeny



  • 2 See also


  • 3 References




Classification



Taxonomy


  • Order Therapsida

  • Suborder Anomodontia
    • Biseridens

    • Patranomodon

    • clade Anomocephaloidea
      • Anomocephalus

      • Tiarajudens


    • Superfamily Venyukovioidea
      • Family Otsheridae
        • Otsheria

        • Suminia


      • Family Venyukoviidae
        • Ulemica

        • Venjukovia



    • Clade Chainosauria
      • Galechirus

      • Galeops

      • Galepus

      • Infraorder Dicynodontia




Phylogeny


Cladogram modified from Liu et al. (2009):[2]


.mw-parser-output table.cladeborder-spacing:0;margin:0;font-size:100%;line-height:100%;border-collapse:separate;width:auto.mw-parser-output table.clade table.cladewidth:100%.mw-parser-output table.clade tdborder:0;padding:0;vertical-align:middle;text-align:center.mw-parser-output table.clade td.clade-labelwidth:0.8em;border:0;padding:0 0.2em;vertical-align:bottom;text-align:center.mw-parser-output table.clade td.clade-slabelborder:0;padding:0 0.2em;vertical-align:top;text-align:center.mw-parser-output table.clade td.clade-barvertical-align:middle;text-align:left;padding:0 0.5em.mw-parser-output table.clade td.clade-leafborder:0;padding:0;text-align:left;vertical-align:middle.mw-parser-output table.clade td.clade-leafRborder:0;padding:0;text-align:right



Therapsida 







unnamed






 

Biarmosuchia


 
 

Gorgonopsia


 
 

unnamed






 

Dinocephalia


 
 Anomodontia 






 

Biseridens


 

unnamed






 

Anomocephalus


 

unnamed






 Venyukovioidea 






 

Otsheria


 

unnamed






 

Ulemica


 
 

Suminia


 
 
 
 Chainosauria 






 

Patranomodon


 

unnamed






 

Galeops


 
 

Eodicynodon


 
 
 
 
 
 
 
 

Below is a cladogram from Kammerer et al. (2013).[7] The data matrix of Kammerer et al. (2013), a list of characteristics that was used in the analysis, was based on that of Kammerer et al. (2011), which followed a comprehensive taxonomic revision of Dicynodon.[8] Because of this, many of the relationships found by Kammerer et al. (2013) are the same as those found by Kammerer et al. (2011). However, several taxa were added to the analysis, including Tiarajudens Eubrachiosaurus, Shaanbeikannemeyeria, Zambiasaurus and many "outgroup" taxa (positioned outside Anomodontia), while other taxa were re-coded. As in Kammerer et al. (2011), the interrelationships of non-kannemeyeriiform dicynodontoids are weakly supported and thus vary between the analyses.[7]





1 






 

Biseridens


 
 






 






 

Anomocephalus


 
 

Tiarajudens


 
 
 






 

Patranomodon


 
 






 2 






 

Suminia


 
 






 

Otsheria


 
 

Ulemica


 
 
 
 3 






 






 

Galepus


 
 

Galechirus


 
 
 






 

Galeops


 
 4 






 

"Eodicynodon" oelofseni


 
 






 






 

Eodicynodon oosthuizeni


 
 

Colobodectes


 
 
 






 

Lanthanostegus


 
 






 

Chelydontops


 
 






 

Endothiodon


 
 






 

Pristerodon


 
 5 






 6 






 7 






 

Diictodon


 
 






 

Eosimops


 
 






 

Prosictodon


 
 

Robertia


 
 
 
 
 8 






 

Emydops


 
 9 






 10 






 

Dicynodontoides


 
 

Kombuisia


 
 
 






 

Myosaurus


 
 11 






 

Cistecephalus


 
 






 

Cistecephaloides


 
 

Kawingasaurus


 
 
 
 
 
 
 
 

 12 


 
 
 
 
 
 
 
 
 
 
 
 
 
1 Anomodontia, 2 Venyukovioidea, 3 Chainosauria, 4 Dicynodontia, 5 Therochelonia, 6 Diictodontia, 7 Pylaecephalidae, 8 Emydopoidea, 9 Kistecephalia, 10 Kingoriidae, 11 Cistecephalidae, 12 Bidentalia
 


12 






 13 






 

Keyseria


 
 






 

Daqingshanodon


 
 






 14 






 

Oudenodon


 
 






 

Tropidostoma


 
 

Australobarbarus


 
 
 
 






 






 

Odontocyclops


 
 

Idelesaurus


 
 
 






 15 






 

Rhachiocephalus


 
 

Kitchinganomodon


 
 
 16 






 

Syops


 
 17 






 

Aulacocephalodon


 
 






 

Pelanomodon


 
 






 

Geikia elginensis


 
 

Geikia locusticeps


 
 
 
 
 
 
 
 
 
 
 18 






 






 

Interpresosaurus


 
 






 

Elph


 
 

Katumbia


 
 
 
 






 

Gordonia


 
 






 






 

Basilodon


 
 

Sintocephalus


 
 
 






 

Dicynodon lacerticeps


 
 






 

"Dicynodon" huenei


 
 






 






 

Delectosaurus


 
 

Vivaxosaurus


 
 
 






 






 

Daptocephalus


 
 






 

Dinanomodon


 
 

Peramodon


 
 
 
 






 

Jimusaria


 
 






 

Turfanodon


 
 






 19 






 

Euptychognathus


 
 






 

Lystrosaurus murrayi


 
 






 

"Lystrosaurus" declivus


 
 






 

"Lystrosaurus" curvatus


 
 






 

"Lystrosaurus" maccaigi


 
 






 

"Lystrosaurus" hedini


 
 






 

TSK 2


 
 

Kwazulusaurus


 
 
 
 
 
 
 
 
 

 20 


 
 
 
 
 
 
 
 
 
 
 
12 Bidentalia, 13 Cryptodontia, 14 Oudenodontidae, 15 Rhachiocephalidae, 16 Geikiidae, 17 Geikiinae, 18 Dicynodontoidea, 19 Lystrosauridae, 20 Kannemeyeriiformes
 


20 






 

Angonisaurus


 
 






 21 






 






 

Tetragonias


 
 

Vinceria


 
 
 






 

Shansiodon


 
 

Rhinodicynodon


 
 
 
 






 

Dinodontosaurus


 
 






 






 

Shaanbeikannemeyeria


 
 






 

Kannemeyeria lophorhinus


 
 

Kannemeyeria simocephalus


 
 
 
 






 






 

Parakannemeyeria


 
 

Xiyukannemeyeria


 
 
 






 






 

Dolichuranus


 
 






 

Rechnisaurus


 
 

Uralokannemeyeria


 
 
 
 






 

Rabidosaurus


 
 






 

Sinokannemeyeria


 
 






 






 

Rhadiodromus


 
 

Wadiasaurus


 
 
 22 






 23 






 

Zambiasaurus


 
 






 

Moghreberia


 
 

Placerias


 
 
 
 24 






 

Stahleckeria


 
 






 






 

Eubrachiosaurus


 
 

Sangusaurus


 
 
 






 

Jachaleria


 
 

Ischigualastia


 
 
 
 
 
 
 
 
 
 
 
 
 
20 Kannemeyeriiformes, 21 Shansiodontidae, 22 Stahleckeriidae, 23 Placeriinae, 24 Stahleckeriinae
 


See also


  • Theriodont

  • Dinocephalia

  • Biarmosuchians

  • Evolution of mammals


References




  1. ^ *Thulborn, T.; Turner, S. (2003). "The last dicynodont: an Australian Cretaceous relict". Proceedings of the Royal Society of London B. 270 (1518): 985–993. doi:10.1098/rspb.2002.2296. JSTOR 3558635. PMC 1691326. PMID 12803915..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  2. ^ ab Liu, J.; Rubidge, B.; Li, J. (2009). "A new specimen of Biseridens qilianicus indicates its phylogenetic position as the most basal anomodont". Proceedings of the Royal Society B. 277 (1679): 285–292. doi:10.1098/rspb.2009.0883. PMC 2842672. PMID 19640887.


  3. ^ Bakker 1975


  4. ^ BOTHA-BRINK, Jennifer; ANGIELCZYK, Kenneth D. (2010). "Do extraordinarily high growth rates in Permo-Triassic dicynodonts (Therapsida, Anomodontia) explain their success before and after the end-Permian extinction?". Zoological Journal of the Linnean Society. 160 (2): 341–365. doi:10.1111/j.1096-3642.2009.00601.x.


  5. ^ Bajdek, Piotr; Qvarnström, Martin; Owocki, Krzysztof; Sulej, Tomasz; Sennikov, Andrey G.; Golubev, Valeriy K.; Niedźwiedzki, Grzegorz (2016). "Microbiota and food residues including possible evidence of pre-mammalian hair in Upper Permian coprolites from Russia". Lethaia. 49 (4): 455–477. doi:10.1111/let.12156.


  6. ^ Chinsamy-Turan, A. (2011) Forerunners of Mammals: Radiation - Histology - Biology, p.39. Indiana University Press,
    ISBN 0253356970. Retrieved May 2012



  7. ^ ab Kammerer, C. F.; Fröbisch, J. R.; Angielczyk, K. D. (2013). Farke, Andrew A, ed. "On the Validity and Phylogenetic Position of Eubrachiosaurus browni, a Kannemeyeriiform Dicynodont (Anomodontia) from Triassic North America". PLoS ONE. 8 (5): e64203. doi:10.1371/journal.pone.0064203. PMC 3669350. PMID 23741307.


  8. ^ Kammerer, C.F.; Angielczyk, K.D.; Fröbisch, J. (2011). "A comprehensive taxonomic revision of Dicynodon (Therapsida, Anomodontia) and its implications for dicynodont phylogeny, biogeography, and biostratigraphy". Journal of Vertebrate Paleontology. 31 (Suppl. 1): 1–158. doi:10.1080/02724634.2011.627074.












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