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|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|P. P. Skutschas 2009||(primitive (-), derived (+), and uncertain polarity (?) character states). Differs from stem caudates Marmorerpeton, Kokartus, and Karaurus in having fully enclosed spinal nerve foramina in atlas (+) and lightly built vertebrae (+) and in lacking any sculpture on vertebrae (+). Differs from other Mesozoic crown caudates, except Iridotriton, Chunerpeton, Sinerpeton, Jeholotriton, Laccotriton, Liaoxitriton, Pangerpeton, Kiyatriton, Eoscapherpeton, and Horezmia in having unicapitate transverse processes on trunk vertebrae (?). Among Mesozoic crown caudates differs further from batrachosauroidids in retaining prominent intercotylar tubercle (-) and in having flat anterior cotylar surfaces on atlas (?); from scapherpetids in lacking any constriction at base of intercotylar tubercle (-); from Iridotriton in lacking spinal nerve foramina in caudal vertebrae (-), in having Meckelian groove in dentary not reaching symphysis (-), and in having subcentral keel on trunk vertebrae (?); from Chunerpeton in more posterior orientation of transverse processes on trunk vertebrae (ca. 75–85° from midline in Chunerpeton versus 55–65° in Nesovtriton) (?) and in having more elongate trunk vertebrae (ratio of maximum width of centrum:ventral midline length ca. 0.4 in Nesovtriton versus 0.6–0.7 in Chunerpeton) (+); from Sinerpeton and Jeholotriton in having relatively more elongate trunk vertebrae (ratio of maximum width of centrum:ventral midline length ca. 0.8–0.9 in Sinerpeton and Jeholotriton) (+); from Liaoxitriton and Pangerpeton in having subcentral keel on trunk vertebrae (?); from Kiyatriton in lacking median ridge on dorsal surface of intercotylar tubercle (?) and tripartite posterior cotyle with dorsoventral compression on atlas (?); and from Eoscapherpeton and Horezmia in lacking hypapophyses on atlas and trunk vertebrae(-).|