Reptile Family Tree - Peters 2017 1112 taxa, 231 characters Note: This tree does not support DNA topologies over 100 Eldeceeon 1990.7.1 67 Eldeceeon holotype long phylogenetic distances. 100 91 Romeriscus Diplovertebron Certain dental traits are convergent and do not define clades. 85 67 Solenodonsaurus 100 Chroniosaurus 94 Chroniosaurus PIN3585/124 Chroniosuchus 58 94 Westlothiana Casineria 84 Brouffia 93 77 Coelostegus Cheirolepis Paleothyris Eusthenopteron 91 Hylonomus Gogonasus 78 66 Anthracodromeus 99 Osteolepis 91 Protorothyris MCZ1532 85 Protorothyris CM 8617 81 Pholidogaster Protorothyris MCZ 2149 97 Colosteus 87 80 Vaughnictis Elliotsmithia Apsisaurus Panderichthys 51 Tiktaalik 86 Aerosaurus Varanops Greererpeton 67 90 94 Varanodon 76 97 Koilops <50 Spathicephalus Varanosaurus FMNH PR 1760 Trimerorhachis 62 84 Varanosaurus BSPHM 1901 XV20 Archaeothyris 91 Dvinosaurus 89 Ophiacodon 91 Acroplous 67 <50 82 99 Batrachosuchus Haptodus 93 Gerrothorax 97 82 Secodontosaurus Neldasaurus 85 76 100 Dimetrodon 84 95 Trematosaurus 97 Sphenacodon 78 Metoposaurus Ianthodon 55 Rhineceps 85 Edaphosaurus 85 96 99 Parotosuchus 80 82 Ianthasaurus 91 Wantzosaurus Glaucosaurus Trematosaurus long rostrum Cutleria 99 Pederpes Stenocybus 95 Whatcheeria 62 94 Ossinodus IVPP V18117 Crassigyrinus 87 62 71 Kenyasaurus 100 Acanthostega 94 52 Deltaherpeton 82 Galechirus 90 MGUH-VP-8160 63 Ventastega 52 Suminia 100 Baphetes Venjukovia 65 97 83 Ichthyostega Megalocephalus Eodicynodon 80 94 60 Proterogyrinus 99 Sclerocephalus smns90055 100 Dicynodon 74 Eoherpeton Iberospondylus 95 95 Hipposaurus Eryops 98 100 Neopteroplax Biarmosuchus 98 Nigerpeton 77 Anthracosaurus 99 100 Saharastega Titanophoneus Eucritta 100 Procynosuchus 100 Thrinaxodon 99 Ariekanerpeton Prozostrodon Kotlassia 100 100 100 Probainognathus Discosauriscus 98 96 88 Chiniquodon 86 Seymouria 100 100 Castorocauda Makowskia 98 100 Haldanodon 78 Seymouria.tadpole Liaoconodon 81 Pachygenelus Therioherpeton Utegenia 97 <50 Sinoconodon 90 Balanerpeton 74 Brasilodon 92 Caerorhachis 84 Haramiyavia 98 Amphibamus <50 Platyrhinops 97 Chaliminia Megazostrodon 96 100 Riograndia 67 Dendrerpeton <50 Hadrocodium Tersomius 84 Oligokyphus 92 100 96 Brasilotherium Acheloma Heleosaurus 97 Kayentatherium Platyhistrix 86 Kuehneotherium 96 81 99 Mycterosaurus FMNH UC169 Tritylodon Stegops 78 90 Akidolestes 76 92 Dissorophus Nikkasaurus 86 97 Spinolestes Ornithorhynchus 84 85 65 Cacops 79 81 Mesenosaurus PIN 158/1 60 Jeholodens 95 Broiliellus 94 Niaftasuchus Gobiconodon 91 Juramaia 100 Ecolsonia 85 Yanoconodon 95 Cronopio Tambachia 88 Archaeovenator 97 Acristatherium 95 Repenomamus robustus 95 Georgenthalia 95 Orovenator Repenomamus giganticus 87 Didelphis Pyozia 91 Micromelerpeton Ukhaatherium 74 Doleserpeton 100 Broomia 88 94 Eomaia 91 Apateon 89 Milleropsis BPI-720 94 Agilodocodon 92 Gerobatrachus Andrias 98 Erpetonyx Arctocyon 72 85 88 Celtedens 78 Amphicyon 64 Rana Eudibamus Thylacinus 100 Aphelosaurus 61 97 Utaherpeton 100 78 Hyaenodon 62 Tuditanus 92 Petrolacosaurus 71 75 Ernanodon Araeoscelis Kirktonecta 67 61 Deltatheridium 57 100 Spinoaequalis Borhyaena Sauropleura <50 69 Ptyonius 87 Galesphyrus Didelphodon <50 <50 Batropetes Youngina BPI 3859 60 Thylacosmilus 99 85 94 73 Rhynchonkos Acerosodontosaurus 82 Oxyaena Vincelestes 99 Micraroter 72 85 Thadeosaurus 56 77 91 Euryodus primus 100 Tangasaurus Anebodon Hovasaurus Notoryctes 94 Pantylus 83 89 Dromiciops 90 Claudiosaurus Balbaroo 94 Scincosaurus 87 58 63 Batrachiderpeton Adelosaurus 71 Proargyrolagus 97 100 Keraterpeton 100 98 Atopodentatus <50 95 Thylacoleo Macropus 100 Diceratosaurus 100 Sinosaurosphargis Vombatus 60 100 Diplocaulus 72 Largocephalosaurus 57 Paedotherium Diploceraspis Omphalosaurus 82 Interatherium Acherontiscus 88 91 100 58 Maiopatagium Rileymillerus Anarosaurus 90 66 62 100 Phlegethontia CGH129 72 Vintana Diandongosaurus Groeberia 100 Phlegethontia AMNH6966 86 77 Palatodonta Pyrotherium 80 Microbrachis Lethiscus Pappochelys 85 100 98 100 Toxodon 85 100 Adelospondylus Oestocephalus <50 Palacrodon Eurygenium Adelogyrinus 99 Majiashanosaurus 69 Paraplacodus Chinlestegophis 97 Reptilia 96 99 Brachydectes Placodus inexpectatus Bystrowiella 100 72 97 99 83 Placodus gigas 98 Lysorophus Silvanerpeton 100 Eocaecilia 98 Henodus 98 Asioryctes long rostrum 80 <50 Gephyrostegeus bohemicus Dermophis 100 Placochelys Asioryctes holotype Cyamodus 60 Tulerpeton 84 Monodelphis domestica 64 Pachypleurosaurus 96 Docofossor 100 Qianxisaurus 100 Urumqia 92 91 Volaticotherium 83 Cartorhynchus Nandinia Bruktererpeton 57 Sclerocormus <50 63 92 Protictis 97 Thuringothyris MNG 7729 94 Keichousaurus Thuringothyris MNG 10183 85 Dianmeisaurus 94 Ectocion UM 8615 82 93 Vulpavus Hanosaurus 91 Lariosaurus Deltatherium 79 61 Procyon Saurorictus 59 Corosaurus 90 Talpa 99 99 89 Nothosaurus 70 Cephalerpeton Opisthodontosaurus 81 Wangosaurus Herpestes 80 98 Reiszorhinus 60 Simosaurus 75 Mustela 85 Anningsaura 64 Stylinodon 75 100 Concordia KUVP 8702a 92 Pistosaurus 96 Concordia KUVP 96/95 Yunguisaurus 70 <50 59 Psittacotherium Romeria primus 75 81 Pujilia 100 Plesiosaurus 73 57 94 Phoca Miacis 74 Romeria texana 100 Trinacromerum 88 Protocaptorhinus 99 Brachauchenius Palaeosinopa 87 Hyopsodus 66 Kronosaurus 92 Enaliarctos 86 Paracaptorhinus 63 99 Eocaptorhinus Zalophus 96 78 Panthera 99 Captorhinus 61 Psilotrachelosaurus 97 Labidosaurus 69 PIMUZ AIII 0192 Crocuta 96 SMF R 4710 94 Canis 96 Stereosternum Proteles 100 99 Brazilosaurus holotype Limnoscelis 76 Maotherium sinensis Orobates Mesosaurus Serpianosaurus 90 Tupaia 79 Tseajaia 97 87 ?Hapalodectes IVPP V5235 98 Tetraceratops 94 Concavispina 83 98 Xinpusaurus kohi 95 Macroscelides 77 95 Milleretta RC14 Xinpusaurus suni 90 Chrysochloris Milleretta RC70 87 Thalattosaurus Necrolestes 100 79 100 Endennasaurus 96 Apatemys Clarazia 90 Feeserpeton Trogosus Askeptosaurus 85 50 Australothyris 83 <50 Scutisorex 99 Eocasea 68 Anshunsaurus 73 Miodentosaurus 96 79 Limnogale Delorhynchus 100 Microgale cowani 85 Microleter 100 Eusaurosphargis juvenile 79 72 91 100 86 Potamogale 97 Acleistorhinus Eusaurosphargis holotype Eunotosaurus 100 Helveticosaurus Micropotamogale Vancleavea 59 55 Zalambdalestes 88 Oedaleops 84 Eothyris Wumengosaurus Solenodon 73 94 <50 91 Colobomycter vaughni Thaisaurus 81 Henkelotherium 81 Xinminosaurus Colobomycter pholeter 93 79 Nambaroo Datheosaurus Utatsusaurus 100 Gomphos 62 81 93 Ennatosaurus 98 87 Shastasaurus alexandrae Oryctolagus 74 Shastasaurus pacificus UCMP 9017 <50 84 Casea 98 88 Brachyerix Cotylorhynchus Eohupehsuchus brevicollis 72 Vilevolodon 99 97 Parahupehsuchus 87 Erinaceus 96 Echinops Shenshou 98 Diadectes CM25471 Hupehsuchus Ignacius Grippia 97 92 71 Silvadectes absitus MNG 8853 51 Paramys Phonodus 98 88 Mikadocephalus 98 67 92 YGMIRSPCV03108 Rattus 96 79 94 Bolosaurus Parvinatator Mus Belebey 86 Chaohusaurus 71 92 Kryptobaatar 98 Oradectes sanmiguelensis 79 Besanosaurus 97 Ptilodus 58 Diadectes UC706 Qianichthyosaurus CMNH V1412 Rugosodon Diadectes sideropelicus 64 Qianichthyosaurus IVPP V11839 98 52 71 Megaconus Procolophon 91 Phalarodon fraasi 57 65 53 72 Carpolestes 69 98 Scolaparia NSM 99 GF82.1 94 Contectopalatus 85 'Phalarodon' nordenskioeldii 57 Paulchoffatia 98 Leptopleuron Taeniolabis 99 Pentaedrusaurus Mixosaurus 66 80 57 66 Cymbospondylus petrinus Plesiadapis Hypsognathus 58 97 92 Shonisaurus sikanniensis Daubentonia Stephanospondylus 91 Guanlingsaurus GNG dq-50 52 Guanlingsaurus YGMR SPC V03107 Ptilocercus 87 Provelosaurus 63 Deltavjatia KPM232 73 Wimania Notharctus 76 86 Guizhouichthyosaurus tangae IVPP V 11853 82 Rooneyia Scutosaurus 84 'Cymbospondylus' buchseri Bradysaurus NHMW 63 79 76 92 Tarsius 95 Shonisaurus popularis Darwinius <50 Anthodon Ichthyosaurus communis 58 66 Pareiasuchus 91 Proconsul Ophthalmosaurus 55 100 Pumiliopareia 71 Leptonectes tenuirostris Homo sapiens 99 Arganaceras 75 Hauffiopteryx Palaechthon 69 76 100 Sclerosaurus BRLSI M1399 67 Youngina SAM K7710 89 Cynocephalus Odontochelys Eurhinosaurus 76 Youngina BPI 375 57 78 Chriacus Trionyx 88 95 91 Prolacerta AMNH 9502 97 Onychonycteris Ocepechelon 68 Ixalerpeton 82 Pteropus Bunostegos Czatkowiella Zhangheotherium 65 80 71 Malerisaurus 95 Metachcheiromys Elginia 82 88 Prolacerta BPI 1/471 87 100 60 Ozimek Manis Niolamia 53 84 Meiolania Protorosaurus NHMW 1943I4* Maelestes <50 84 Boreopricea 89 86 Proterochersis Jaxtasuchus 97 ?Hapalodectes IVPP V2385 Proganochelys 57 83 <50 Protorosaurus NMK S 180 Anagale 88 93 Kayentachelys 96 Protorosaurus WMsN P47361 51 74 Leptictis Mongolochelys Pamelaria 98 73 Rhynchocyon Chubutemys 77 Andrewsarchus 95 Chelonia Youngina TM 3603 Sinonyx 91 100 Youngopsis rubidgei RC90 91 Santanachelys 100 Hemicentetes 100 Youngopsis kitchingi TM1490 96 Dermochelys 74 100 Tenrec Youngoides RC91 Macrochelys temminckii 58 Leptictidium 82 Youngina AMNH 5561 74 Terrapene carolina 87 96 Indohyus 62 Youngoides UC1528 82 95 Foxemys 82 99 Pakicetus 69 Carettochelys Maiacetus Pelomedusa 89 Proterosuchus BPI 1 4016 100 Zygorhiza 95 100 Araripemys 87 100 Chasmatosaurus QR 880C.500 96 NMV P252567 Chelus 95 91 Chasmatosaurus SAM PK 11208 99 Aetiocetus Chasmatosaurus TM 201 100 Orcinus 72 Bashkyroleter 75 Proterosuchus RC96 Physeter 72 Macroleter 95 Chasmatosaurus NMQR 1484 75 Emeroleter 71 Teyujagua Onychodectes Lanthanosuchus Elaphrosuchus RC59 <50 Alcidedorbignya 89 96 Nyctiphruretus holotype 96 Ectoconus Nyctiphruretus PIN 4659/1 Pantolambda 78 93 Proterosuchus SAMPKK10603 Doswellia 81 Saurodectes 89 Barylambda Owenetta rubidgei 86 97 Youngina BPI 2871 Glyptodon 85 Elachistosuchus 92