 the early Late Triassic is published by Ezcurra & Butler (2018).
 A study on the phylogenetic relationships of phytosaurs is published by Jones & Butler (2018).

Archosaurs

Other reptiles

Research
 The study on the phylogenetic relationships of mesosaurs and other early reptiles published by Laurin & Piñeiro (2017) is reevaluated by MacDougall et al. (2018).
 An adult specimen of Stereosternum tumidum preserved next to juvenile material, providing new information on the baseline ossification sequences and growth rates in this species, is described from Lower Permian sediments of the Irati Formation (Brazil) by Bickelmann & Tsuji (2018).
 A study evaluating the purported aquatic adaptations of Mesosaurus tenuidens is published by Nuñez Demarco et al. (2018).
 Description of the anatomy of the lower jaw of Delorhynchus is published by Haridy, Macdougall & Reisz (2018).
 Pathological sacral vertebrae of a pareiasaur belonging to the clade Velosauria are described from the Permian (Wuchiapingian)  upper member of the Madumabisa Mudstone Formation (Luangwa Basin, Zambia) by Turner & Sidor (2018).
 A new skull ascribed to Procolophon trigoniceps, so far representing the most complete and best preserved specimen collected at the Lower Triassic Sanga do Cabral Supersequence (Brazil), is described by Silva-Neves, Modesto & Dias-da-Silva (2018).
 Fragments of the mandible of a small reptile, possibly Ruhuhuaria reiszi, are described from the Triassic Manda Beds of Tanzania by Bradley & Nesbitt et al. (2018).
 A study on the effect of inclusion and exclusion of autapomorphies on the analyses of phylogenetic relationships of early eureptiles is published by Matzke & Irmis (2018).
 A study on the anatomy and histology of the caudal vertebrae of Permian captorhinids from the Richards Spur locality (Oklahoma, United States), supporting previous hypotheses that Captorhinus and other early Permian captorhinids were capable of tail autotomy, is published by LeBlanc et al. (2018).
 A study on the teeth of Opisthodontosaurus carrolli is published
the early Late Triassic is published by Ezcurra & Butler (2018). 
  A study on the phylogenetic relationships of phytosaurs is published by Jones & Butler (2018). 

 archosaur 

 early reptile 

 Research 
  The study on the phylogenetic relationships of mesosaurs and early early reptiles published by Laurin & Piñeiro (2017) is reevaluated by MacDougall et al. (2018). 
  An adult specimen of Stereosternum tumidum keep next to juvenile material, supply new information on the service line ossification sequences and growth rates in this species, is trace from Lower Permian sediments of the Irati Formation (Brazil) by Bickelmann & Tsuji (2018). 
  A study evaluating the purported aquatic adaptation of Mesosaurus tenuidens is published by Nuñez Demarco et al. (2018). 
  Description of the anatomy of the lower jaw of Delorhynchus is publish by Haridy, Macdougall & Reisz (2018). 
  Pathological sacral vertebrae of a pareiasaur belonging to the clade Velosauria are describe from the Permian (Wuchiapingian)   upper member of the Madumabisa Mudstone Formation (Luangwa Basin, Zambia) by Turner & Sidor (2018). 
  A new skull ascribed to Procolophon trigoniceps, so far representing the about complete and best preserved specimen collected at the Lower Triassic Sanga do Cabral Supersequence (Brazil), is described by Silva - Neves, Modesto & Dias - da - Silva (2018). 
  fragment of the mandible of a small reptile, possibly Ruhuhuaria reiszi, are described from the Triassic Manda Beds of Tanzania by Bradley & Nesbitt et al. (2018). 
  A study on the effect of inclusion and exclusion of autapomorphies on the analyses of phylogenetic relationships of early eureptiles is published by Matzke & Irmis (2018). 
  A survey on the anatomy and histology of the caudal vertebrae of Permian captorhinids from the Richards Spur vicinity (Oklahoma, United States), digest former hypotheses that Captorhinus and other early Permian captorhinids were capable of tail autotomy, is published by LeBlanc et al. (2018). 
  A study on the teeth of Opisthodontosaurus carrolli is published
 thf early Late Triassic is published by Eecyrra & Uutler (2018).
 A study on the phylogenetic relatioiships of phytosaurs is publishdd by Jonvs & Butlee (2018).

Arrhosaurs

Other re'files

Research
 Bhe scuvy on the phylonenetic reldtionships of kerodaurs and other early reptiles publyshed bu Paurin & Piñeiro (2017) is weevzluated by MacDougall et al. (2018).
 An adhlt spebimen of Stereostrrnum tumidum preserved nedt tl juvenile materiap, providing new unformation un the bastlnne ossificztion sequences and growth rater in chis speciew, us fgscribed fron Lowvr Permian sediments mf the Orati Formatiok (Bravil) vy Bickelmann & Tsuji (2018).
 A study evaluatind the pur[oxted aquatic adaptatiinw of Kesovaurjw tdnujdxns is puhliahed by Nuñsz Demarco wt al. (2018).
 Description pf nne anatomy or the jorer jaw of Delorhynchus is published by Hadidy, Macdougall & Reisz (2018).
 Pathological sacral gertebrae of a pareiasaur belonging to the clade Velosaurid are aesevlbed drlm the Permian (Wuchiapingian)  upper member of fht Msdumabisa Mudsbone Formation (Luamgaa Fasin, Zambia) cy Turusr & Sidor (2018).
 A new skupl ascrybed ro Procoljphom trigoniceps, so far represwnting the mjwt complete and bedt preserveb specomen vollected at the Lower Criassjc Sanga do Cabral Shoersequence (Brazkl), ps dascribed by Silva-Neves, Modqsto & Diaw-da-Snlva (2018).
 Frxgmemts of the mandihle on a small reptile, plssibpy Ruhuhuariw reiszi, are described from the Triassic Mands Tedv of Tanvania ny Bradley & Nesfitt et al. (2018).
 A xtudy ou the dffect of pnclusion and exclusyon of autapoklrphies on tie analysqs od phtlogenegkc relationshils of early eureptioes is published bn Mateks & Irmis (2018).
 A stubv in the anatomy snd hiftllpgr of the cauddl vdrtdnrae uf Permian gapgorhonids from the Richasds Apur locality (Oklanoia, Unitee States), supporting ptevious hypotheses that Ca'torhimus and other early Permian captodhinids wfre capable of eail autotomy, is published by LeBlanc et al. (2018).
 A study on the teeth of Opisrhodontosaurus carrpkli is publmshed
the early Late Triassic is published by Butler A study the phylogenetic relationships Jones Butler (2018). Archosaurs reptiles Research The on the phylogenetic relationships of mesosaurs other early reptiles published by Laurin & Piñeiro (2017) is reevaluated by MacDougall al. (2018). An adult specimen of Stereosternum tumidum preserved next to juvenile material, new on baseline sequences and growth rates in this species, is described from Lower Permian sediments of the Irati (Brazil) by Bickelmann & Tsuji (2018). A study the purported aquatic adaptations Mesosaurus tenuidens is published by Demarco al. (2018). of anatomy the lower jaw Delorhynchus is published by Haridy, Macdougall & Reisz (2018). Pathological sacral vertebrae of a pareiasaur belonging to clade Velosauria from the (Wuchiapingian) member the Madumabisa Mudstone Basin, Zambia) by Turner & Sidor skull ascribed to Procolophon trigoniceps, so far representing most complete best preserved specimen collected at the Triassic Sanga do Cabral Supersequence (Brazil), is described Silva-Neves, Modesto & Dias-da-Silva (2018). Fragments of the mandible of a small reptile, possibly Ruhuhuaria described from the Triassic Beds of Tanzania Bradley Nesbitt al. A study the effect of inclusion and exclusion of autapomorphies on the analyses phylogenetic relationships of early eureptiles is published by Matzke & A on the anatomy histology of the caudal of captorhinids from the Richards (Oklahoma, States), that and early Permian captorhinids were of tail autotomy, is published LeBlanc et al. (2018). of Opisthodontosaurus carrolli is published
 the early Late Triassic is pubLished by EzCurra & butLer (2018).
 a sTudy On thE phylogenetic rELatiOnships of phytosaurs is pUblisHeD By JoNEs & butleR (2018).

ArchosAUrS

oTheR rEpTilEs

rEsEarch
 the Study on The phylogeNetIc RelationshipS Of Mesosaurs aNd oTher early repTilEs publIsHed BY LaurIn & PIñeirO (2017) is reeVAluateD by MacDouGaLL et al. (2018).
 AN Adult spECImEn of stereosternum tumiDUm PReserved next to JuveniLe MAtERIal, ProViding new iNfOrmatIOn on the BAsELINe oSSification seqUences and grOWth Rates iN tHis SPecies, Is desCrIBed From Lower PeRmiaN sedimentS of the iRati ForMAtion (BrAzil) by bicKelMann & tSuJi (2018).
 a stUdY EvaLUaTinG The PurporteD aQuAtic aDaptATIONs of mesOsauRus teNuidens is publIshEd by nUñeZ DemaRco et Al. (2018).
 DeScRiptiOn of thE anatOmY of the lower jaw oF DelOrhynchus Is pUbLisHeD by HaRIdy, MacDouGalL & Reisz (2018).
 PAthologICal SaCRAL vErtebrae of a pareiasAuR BElOnging to The claDE VElOSauria arE dEscRibeD FRom thE PerMIaN (WuchiapIngian)  UPpEr Member oF tHe MaduMaBisA MuDstonE formAtion (LUangwa BaSin, ZaMBia) by Turner & SidOR (2018).
 A new skull ascRIbED To pRocoLopHon trigonicEps, sO Far rEpreSEnTinG The moSt comPlETe ANd best preserved specImEn collEcted At the Lower TriAssic Sanga DO cAbral SupErseQUeNCe (Brazil), is descRibed By Silva-NevES, Modesto & dias-dA-Silva (2018).
 FrAgments of THE mandiblE of A smAll RepTILe, Possibly RuhuhUARia rEiSzi, are dEscRibed frOm tHe TRiaSsiC MAnda Beds oF TanzaniA bY BRaDlEy & NEsbitT Et al. (2018).
 A stuDy On tHe EffEct of INclusiOn and ExclUsIoN Of aUtapomoRPhIES on tHe AnAlysEs oF pHylogEnetIC reLationsHips of earLy eUReptIlEs Is publiShed by Matzke & IRmIs (2018).
 A study on ThE anAtomy aND HistologY of the caudal vertebrae of pErmian cAptOrhinIds fRom the RicHarDs Spur LocALity (OkLahoma, uniteD STatES), SuppoRTInG prEvIous hypothESEs tHat CaPtOrhiNus and oTher early Permian caPTorHinids were capAblE of tAIL aUtoTOmY, Is pUbLIshED By LeBlanc et al. (2018).
 A sTudy on the tEeTH oF OpisthodoNTosAuRus carrOlli is pUblisHEd
 the early Late Triassic i s publishe d byEzc urr a& Bu tler  (2018).
 A st u dy o n the phylogenetic rel ation sh i ps o f  p hytos aurs is pu b l ish ed  b y J on e s& But ler  (2018) .

Archosa urs 
Other reptil e s
Research Th e study on t hephylog en eti c  rela tio nship s of m e sosaur s and oth er earlyr eptiles p ub lish ed by Laurin & Pi ñ ei r o (2017) is re evalua te d  b y Mac Dou gall et al .(2018 ) .
 An a d ul t s pec i men of Stereo sternum tum i dum  prese rv edn ext to  juve ni l e m aterial, pr ovid ing new i nforma t ion ont he base line o ssi fic atio n  s eq uen ce s  an d  g row t h r ates inth is  spec ies, i s desc rib ed f rom L ower Permiansed imen t s o f the  Irat i Fo rm ation  (Braz il) b yBickelmann & Ts uji(2018).
A s tu dyev aluat i ng the  pu rpo rted aq uatic a d apt at i o n sof Mesosaurus tenu id e n sis publi shed b y  N uñ e z Demarc oetal.( 2 018). 
 De s cr iption o f thea na to my of t he  lower  j awofDelor h ynch us ispublishe d byH aridy, Macdoug a ll & Reisz (2 0 18 ) . 
P atho log ical sacral  ver t ebra e of apar e iasau r bel on g in g  to the clade Velos au ria ar e des cribed from t he Permian ( W uchiapin gian )  u pper member of  theMadumabisa Mudstone  Form ation (L uangwa Ba s i n, Zambi a)byTur ner &  S idor (2018).A  new  s kull as cri bed toPro col oph ontr igoniceps , so far  r ep re se nti ng th e  most co mp let eand  best preser ved s peci me nc oll ected a t  t h e  Low er  T rias sic  S angado C a bra l Super sequence(Br a zil) ,is  descri bed by Silva- Ne ves, Modes to  &Dias-d a - Silva (2 018).
 Fragments of the mandibl e o f a s mall  reptile,  po ssibly  Ru h uhuari a reis zi, a re  de s c ribed f ro m t he  TriassicM a nda  Beds  o f Ta nzaniaby Bradley & Nesbi t t e t al. (2018). 
 A  stu d y  o n t h ee ffe ct ofi n clusion and exc lusion ofau t ap omorphieso n t he  analys es of p hylog e netic r elationsh ips of ea rl y eu r e pti les is pub lished b y Matzke&  Irmi s  ( 2018) .
A stud yonthe a natomy and  hist ologyof  the c audal  v ertebrae  of Permian captorhinid s from  theRic hards Spu r l o cal ity (Okla homa , United S tat es) , sup por t ing p revi o us  hy p othes es t h at Captor h in usa n dother early P e rmi an ca pto r hinids  wer e capable of tail autotomy, is p ubli s h edbyL eBla nc  et al. (2018) .
As t udy on t he  teeth of O pisthodo nt o sauru s carr olli i s publi s h ed 
 the_early Late_Triassic is published by_Ezcurra &_Butler_(2018).
 A_study_on the phylogenetic_relationships of phytosaurs_is published by Jones_& Butler (2018).

Archosaurs

Other_reptiles

Research
_The study on the phylogenetic relationships of mesosaurs and other early reptiles published by_Laurin_& Piñeiro_(2017)_is_reevaluated by MacDougall et al._(2018).
 An adult specimen of_Stereosternum tumidum_preserved next to juvenile material, providing new information_on_the baseline ossification_sequences and growth rates in this species, is described_from Lower Permian sediments of the_Irati Formation (Brazil)_by_Bickelmann_& Tsuji (2018).
 A_study evaluating the purported aquatic adaptations_of Mesosaurus tenuidens is published by_Nuñez Demarco et al. (2018).
 Description of_the anatomy of the lower jaw_of Delorhynchus is published by_Haridy, Macdougall_& Reisz (2018).
 Pathological sacral_vertebrae of a_pareiasaur belonging_to the clade_Velosauria are described from the Permian_(Wuchiapingian)  upper_member of the Madumabisa Mudstone Formation_(Luangwa_Basin, Zambia) by_Turner_&_Sidor (2018).
_A new skull_ascribed_to Procolophon_trigoniceps,_so far representing the most complete_and_best preserved specimen collected at the Lower_Triassic Sanga do Cabral_Supersequence_(Brazil), is described by_Silva-Neves, Modesto & Dias-da-Silva (2018).
_Fragments of the mandible of a_small reptile,_possibly Ruhuhuaria_reiszi, are described from the Triassic Manda Beds of Tanzania by_Bradley & Nesbitt et al. (2018).
_A study on the_effect of_inclusion_and exclusion of_autapomorphies_on the_analyses of phylogenetic relationships of early eureptiles_is published_by Matzke & Irmis (2018).
 A_study on the anatomy_and_histology of the caudal vertebrae of_Permian captorhinids from the Richards Spur_locality (Oklahoma, United States), supporting_previous_hypotheses_that Captorhinus and other early_Permian captorhinids were capable of tail_autotomy, is published_by LeBlanc et al. (2018).
 A study_on_the teeth of Opisthodontosaurus carrolli is_published