Table 1 in A time relic: a new species of dwarf boa, Tropidophis Bibron, 1840 (Serpentes: Amerophidia), from the Upper Amazon Basin

Table 1. Osteological comparisons among selected species of Tropidophis Bibron, 1840 and Trachyboa boulengeri Peracca, 1910. Diagnostic characters of Tropidophis cacuangoae sp. nov. are highlighted in bold. Species with confirmed records from the Andes mountain range are indicated with a dagger (†).
Tro. cacuangoaeTro.Tro. melanurusTra. boulengeriTro. battersbyisp. nov. † (n = 2);taczanowskyi †(n = 1)(n = 1)(n= 1); holotypeholotype,(n = 1); lectotypeparatypeMaxillary teeth18–2121–2217–181713–14Palatine teeth7–97–8777Pterygoid teeth11–1313–14142010–11Dentary teeth22–2522–231925–2718–20CoronoidpresentpresentpresentabsentabsentPrefrontal-MaxillapresentabsentpresentpresentpresentcontactLateral borders ofconvexconvexconcaveconcaveslightly convexfrontals in dorsal viewDistance of parietaldistinctlydistinctlyvery closevery closemoderatelyridges in posteriorseparatedseparatedseparatedregion of parietalSuture of parietal andslightly curvedslightly curvedV-shapedstrongly curvedmoderatelysupraoccipitalcurvedSuture of supraoccipitalbroadly V-shapedV-shapedalmost straightbroadly V-shapedV-shapedand exoccipitalsLateral ridges ofparallel in anteriorparallel in anteriorparallel in anteriormeet in anteriorparallel in anteriorsupraoccipitalregion, divergingregion, divergingregion, divergingregion withregion, divergingposteriorly,posteriorly,posteriorly, verymedial ridge andposteriorly,moderately pro-moderately pro-pronounceddirectly divergingmoderately pro-nouncednouncedposteriorly, verynouncedpronouncedMedial ridge ofshort (⅓ to ½ ofshort (about ½absentas long asshort (about ½supraoccipitalsupraoccipitalof supraoccipitalsupraoccipital,of supraoccipitallength), weaklylength), weaklyvery pronouncedlength), weaklypronouncedpronouncedpronouncedMedial contact ofloosefirmfirmfirmfirmexoccipitalsDorsal ridges ofmoderatelymoderatelylong, veryshort, verymoderatelyexoccipitalspronouncedpronouncedpronouncedpronouncedpronouncedElongate, perpendicularpresentabsentabsentabsentpresent only ongroove atprooticBasisphenoid-ProoticsutureLevel of caudalat posteriorat posteriorat anterior marginat anterior margindistinctly anteriortermination of maxillamargin ofmargin ofof postorbitalof postorbitalto anterior marginpostorbitalpostorbitalof postorbitalLevel of caudalshortly beforeat posterior end ofdistinctlydistinctlyshortly behindtermination ofposterior end ofexoccipitalposterior toposterior toposterior end ofpterygoidexoccipitalposterior end ofposterior end ofexoccipitalexoccipitalexoccipitalDentary-AngularabsentpresentpresentpresentpresentcontactSplenial-CompoundpresentpresentabsentabsentabsentBone contact