Species SVL_F TL_F Jaw_Width_F Jaw_Length_F gape_F Clutch Neonate_Low Neonate_High Mean_Neonate SVL_M TL_M Jaw_Width_M Jaw_Length_M gape_M SVL_diff TL_Diff Gape_Diff Jaw_Width_Diff Jaw_Length_Diff Adelophis_foxi 3.496048214 2.302585093 NA NA NA 4 NA NA NA 3.43665072 2.259973969 1.909515069 2.576067428 3.863404646 0.059397494 0.042611124 NA NA NA Clonophis_kirtlandii 3.568227584 2.084253661 2.118716178 2.821541613 4.695146241 15 NA NA NA 3.2270948 2.059504102 1.8358649 2.543367731 3.667243579 0.341132784 0.024749559 1.027902662 0.282851278 0.278173882 Nerodia_clarkii 3.955573748 2.728327829 2.649319226 3.399305719 7.073174905 44 NA NA 158.9 3.791693233 2.705712002 2.440457903 3.198588449 6.130834132 0.163880515 0.022615827 0.942340773 0.208861323 0.20071727 Nerodia_cyclopion 4.264613133 3.055102322 3.01185923 3.724469953 8.810266105 37 186 305 245.5 3.936617659 2.799000424 2.594673805 3.330253818 6.78656454 0.327995474 0.256101898 2.023701565 0.417185425 0.394216135 Nerodia_erythrogaster 4.255394892 3.089952933 3.12285457 3.720608355 9.12547749 32 185 248 216.5 4.137668366 3.116337834 2.873771028 3.537884037 7.985197042 0.117726526 -0.026384901 1.140280448 0.249083542 0.182724318 Nerodia_fasciata 4.16988262 3.042546553 3.074242417 3.67380836 8.870426259 62 164 170 167 4.038906139 3.034131724 2.843286474 3.481518002 7.77461954 0.130976481 0.008414829 1.095806719 0.230955943 0.192290358 Nerodia_floridana 4.333779761 3.093991502 3.116040412 3.779738898 9.250277532 132 NA NA 182 4.04639909 2.953098914 2.773201828 3.449278425 7.512761658 0.287380671 0.140892588 1.737515874 0.342838584 0.330460473 Nerodia_rhombifer 4.407992729 3.147121032 3.251747198 3.813176216 9.738532806 62 NA NA 246 4.084864462 3.093248734 2.881203502 3.490448971 7.898508839 0.323128267 0.053872298 1.840023967 0.370543696 0.322727245 Nerodia_sipedon 4.348993116 3.094142388 3.121542658 3.712338251 9.101368442 99 164 170 167 3.990587316 2.859238566 2.724376836 3.337964371 7.142311005 0.3584058 0.234903822 1.959057437 0.397165822 0.37437388 Nerodia_taxispilota 4.128327 2.965372759 3.001661789 3.649138856 8.602843599 61 127 284 205.5 4.055122524 3.057451677 2.797925775 3.440000896 7.559353001 0.073204476 -0.092078918 1.043490598 0.203736014 0.20913796 Regina_alleni 3.612841691 2.396858048 2.297834233 3.019246397 5.448878616 12 136 176 156 3.417498844 2.344895432 2.129850874 2.887134435 4.829543526 0.195342847 0.051962616 0.61933509 0.167983359 0.132111962 Regina_grahamii 4.076214414 2.516413271 2.492231904 3.193852501 6.251628873 39 NA NA NA 3.959839973 2.479126681 2.307262848 3.020596521 5.473683378 0.116374441 0.03728659 0.777945495 0.184969056 0.17325598 Regina_rigida 3.939147923 2.519538981 2.486798656 3.291861074 6.429423064 14 155 188 171.5 3.704960604 2.506832176 2.282237421 2.981351271 5.343968041 0.234187319 0.012706805 1.085455023 0.204561235 0.310509803 Regina_septemvittata 3.836595879 2.748983308 2.370076521 3.051345054 5.679937683 23 NA NA 161 3.75001928 2.733849016 2.306738084 2.974163752 5.38831583 0.086576599 0.015134292 0.291621853 0.063338437 0.077181302 Seminatrix_pygaea 3.321285787 1.768845042 2.002329724 2.695164464 4.238485947 22 95 135 115 3.185564753 1.937445171 1.89014867 2.530225032 3.756167878 0.135721034 -0.168600129 0.482318069 0.112181054 0.164939432 Storeria_dekayi 3.319307814 1.902933002 1.845040144 2.508481739 3.635018664 41 62 76 69 3.121689538 1.92651287 1.760769626 2.425202943 3.353825835 0.197618276 -0.023579868 0.281192829 0.084270518 0.083278796 Storeria_hidalgoensis 3.069582971 1.623050531 1.504005255 2.192055979 2.589350704 NA NA NA NA 3.054500304 1.883690664 1.578500211 2.231463298 2.766459227 0.015082667 -0.260640133 -0.177108523 -0.074494956 -0.039407319 Storeria_occipitomaculata 2.987887142 1.596764955 1.59438347 2.262201816 2.83278759 21 58 66 62 2.887238102 1.692863256 1.550249317 2.22305031 2.70670373 0.10064904 -0.096098301 0.12608386 0.044134153 0.039151506 Thamnophis_atratus 3.898826965 2.771661159 2.526471904 3.246572359 6.442129357 30 126 209 167.5 3.815495949 2.748936333 2.387114792 3.113912435 5.838073806 0.083331016 0.022724826 0.604055551 0.139357112 0.132659924 Thamnophis_brachystoma 3.389249933 2.211025925 1.784868838 2.548821141 3.57302084 17 NA NA 99.5 3.366289842 2.307679248 1.689281751 2.506659968 3.325733133 0.022960091 -0.096653323 0.247287707 0.095587087 0.042161173 Thamnophis_butleri 3.596664024 2.309734013 2.209046495 2.80556532 4.867602693 20 NA NA 114 3.60913128 2.460806389 2.144724542 2.76948477 4.665093838 -0.012467256 -0.151072376 0.202508855 0.064321953 0.03608055 Thamnophis_chrysosephalus 3.748343698 2.662460466 2.416278039 3.098650696 5.880434407 NA NA NA NA 3.569105155 2.542108714 2.197811182 2.909296303 5.021901788 0.179238543 0.120351752 0.858532619 0.218466857 0.189354393 Thamnophis_couchii 3.952439717 2.783182202 2.528043309 3.283880121 6.520211536 39 NA NA 195 3.86233263 2.784609457 2.380678057 3.124315006 5.841782254 0.090107087 -0.001427255 0.678429282 0.147365252 0.159565115 Thamnophis_cyrtopsis 3.965159012 2.791307887 2.658348926 3.264895272 6.816651961 24 NA NA NA 3.863611608 2.762953129 2.470726664 3.105665585 6.026557062 0.101547404 0.028354758 0.790094899 0.187622262 0.159229687 Thamnophis_elegans 3.912465276 2.766325028 2.626167901 3.235577876 6.673662308 27 NA NA 176 3.784461742 2.757259112 2.374756655 3.064227096 5.715180398 0.128003534 0.009065916 0.95848191 0.251411246 0.17135078 Thamnophis_eques 4.202667617 2.880237961 2.902028486 3.556045808 8.105109738 25 NA NA 166 3.870719298 2.700187733 2.504307528 3.164258382 6.223711885 0.331948319 0.180050228 1.881397853 0.397720958 0.391787426 Thamnophis_errans 3.771917974 2.647935023 2.360741616 3.190908672 5.916334382 NA 175 188 181.5 3.603003151 2.582392987 2.206096025 2.964794572 5.136992129 0.168914823 0.065542036 0.779342253 0.154645591 0.2261141 Thamnophis_fulvus 3.822202548 2.521571969 2.443687715 3.201980776 6.145458738 NA NA NA NA 3.588960518 2.419149162 2.194781753 2.942448686 5.07212701 0.23324203 0.102422807 1.073331728 0.248905962 0.25953209 Thamnophis_gigas 4.429051309 2.99497213 3.010200281 3.735496245 8.831481784 46 NA NA 187 4.118538049 2.985525467 2.637886308 3.399327055 7.042695408 0.31051326 0.009446663 1.788786376 0.372313973 0.33616919 Thamnophis_godmani 3.714549876 2.464807355 2.502527017 3.145941404 6.183285298 NA NA NA 114 3.578184681 2.462599794 2.226349246 2.915235684 5.097495435 0.136365195 0.002207561 1.085789863 0.276177771 0.23070572 Thamnophis_hammondii 3.988549081 2.720922564 2.599304851 3.335342162 6.809065189 36 NA NA NA 3.837208594 2.6985513 2.352904495 3.091203946 5.712442478 0.151340487 0.022371264 1.096622711 0.246400356 0.244138216 Thamnophis_marcianus 3.832188071 2.559857302 2.495586074 3.181717694 6.236258056 31 NA NA 195 3.800154256 2.638160643 2.440232414 3.118207107 5.976212479 0.032033815 -0.078303341 0.260045577 0.05535366 0.063510587 Thamnophis_melanogaster 3.781164726 2.487360119 2.473316113 3.161560372 6.141450949 12.9 NA NA NA 3.753135768 2.575560669 2.3926993 3.066347919 5.762347352 0.028028958 -0.08820055 0.379103597 0.080616813 0.095212453 Thamnophis_mendax 3.663561646 2.397895273 NA NA NA NA NA NA 176 3.650658241 2.442347035 2.397895273 3.091042453 5.821368114 0.012903405 -0.044451762 NA NA NA Thamnophis_nigronuchalis 3.760070675 2.471534479 2.500010616 3.237926259 6.35768034 NA NA NA 166 3.780893509 2.567354177 2.298182976 3.068751155 5.539061123 -0.020822834 -0.095819698 0.818619217 0.20182764 0.169175104 Thamnophis_ordinoides 3.670417731 2.438840435 2.121653205 2.894186523 4.822706095 20 NA NA 127 3.509553683 2.393177449 1.961579943 2.739296889 4.220219092 0.160864048 0.045662986 0.602487003 0.160073262 0.154889634 Thamnophis_proximus 4.029383578 3.051767583 2.357255742 3.112430101 5.762304319 36 130 174 152 3.766494058 2.873840978 2.159998981 2.91245963 4.940869029 0.26288952 0.177926605 0.82143529 0.197256761 0.199970471 Thamnophis_radix 3.943999685 2.666619632 2.49661659 3.167719213 6.211384474 54 NA NA 134 3.864305341 2.735800053 2.379607071 3.042927805 5.687046519 0.079694344 -0.069180421 0.524337955 0.117009519 0.124791408 Thamnophis_rossmani 3.88652565 2.630810068 2.493785194 3.202032454 6.27154659 NA NA NA NA 3.807719362 2.663372437 2.290505323 3.023534389 5.439213415 0.078806288 -0.032562369 0.832333175 0.203279871 0.178498065 Thamnophis_rufipunctatus 3.750280888 2.517432296 2.328615606 3.206788092 5.864864021 18 146.5 254 200.25 3.636591871 2.455340986 2.19261369 3.028152843 5.214705596 0.113689017 0.06209131 0.650158425 0.136001916 0.178635249 Thamnophis_sauritus 3.909707336 3.151567859 2.197010462 2.979285486 5.140840472 26 141.1 165.3 153.2 3.738067029 3.045776326 2.065843799 2.864708643 4.648018207 0.171640307 0.105791533 0.492822265 0.131166663 0.114576843 Thamnophis_scalaris 3.60679262 2.350736153 2.235645187 3.003711751 5.27413223 15 168.5 181.5 175 3.423721539 2.535564559 2.070265905 2.800587746 4.553708176 0.183071081 -0.184828406 0.720424054 0.165379282 0.203124005 Thamnophis_scaliger 3.63758616 NA 2.219203484 2.923161581 5.094948858 16 119 121 120 3.455347209 2.047172281 2.136066416 2.825457066 4.740163761 0.182238951 NA 0.354785097 0.083137068 0.097704515 Thamnophis_sirtalis 3.931605626 2.606791909 2.474735269 3.199046747 6.21783532 85 154.4 201.3 177.85 3.720243036 2.563696729 2.255217803 2.950470844 5.226003545 0.21136259 0.04309518 0.991831775 0.219517466 0.248575903 Thamnophis_sumichrasti 3.960192637 2.559862632 2.624816699 3.318014277 6.840173413 NA NA NA NA 3.789660095 2.638802065 2.314859627 3.084185195 5.607315465 0.170532542 -0.078939433 1.232857948 0.309957072 0.233829082 Thamnophis_valida 4.107639418 2.969944088 2.873651635 3.511703927 7.925777811 34 165 223 194 3.906272328 2.865063175 2.536593692 3.250301068 6.475366886 0.20136709 0.104880913 1.450410925 0.337057943 0.261402859 Tropidoclonion_lineatum 3.26807321 1.322408782 1.726630921 2.27323676 3.082719899 17 84 124 104 3.209546914 1.406791726 1.648610117 2.223701457 2.879282798 0.058526296 -0.084382944 0.203437101 0.078020804 0.049535303 Virginia_striatula 3.021137158 1.409857613 1.58038223 2.250462491 2.793339984 13 74 127 100.5 2.880867791 1.510987958 1.515846053 2.204586899 2.624654852 0.140269367 -0.101130345 0.168685132 0.064536177 0.045875592 Virginia_valeriae 3.118020355 1.395183071 1.7734103 2.42944925 3.383817555 14 64 123 93.5 2.908347642 1.540579674 1.599379048 2.269978576 2.851432151 0.209672713 -0.145396603 0.532385404 0.174031252 0.159470674