A new ctenochasmatid pterosaur from the Tacuarembó Formation (Late Jurassic of Uruguay), Tacuadactylus luciae gen. et sp. nov. is described, based on a rostrum fragment with spatulated tip and dentary fragments. It closely resembles Gnathosaurus in the orientation of the teeth and the presence of interalveolar concavities. However, a unique combination of synapomorphies distinguishes it from other members of the Ctenochasmatidae. These include the presence of a spoon-shaped spatula not sharply demarcated from the post-spatula rostrum, teeth set in alveoli with raised alveolar borders and deep interalveolar concavities, teeth both anteriorly (i.e. procumbent) and laterally oriented, tooth density of 1.58–2 teeth/cm, tooth separation subequal to tooth size, absence of dorsal concavity, presence of a conspicuous system of vessels and foramina at least in the ventral part of the snout, teeth with veined sub millimetric texture of the enamel and unconspicuous carinae. In a phylogenetic analysis, the new taxon was retrieved as a gnathosaurine closely related to Gnathosaurus. The Tithonian-Berriasian biochron of the latter is coherent with the Late Jurassic age of the Batoví Member, as suggested by conchostracans and theropod teeth. This is one of the few South American Jurassic pterosaur taxa named so far and the oldest ctenochasmatid in this continent. As in Plataleorhynchus and Lonchodraco, Tacuadactylus luciae gen. et sp. nov. shows features that can be correlated with tactile foraging.

来自 Tacuarembó 组（乌拉圭晚侏罗纪）的一种新的 ctenochasmatid 翼龙，Tacuadactylus luciae gen。等 sp. 十一月 描述了基于带有铲状尖端和齿状碎片的讲台碎片。它非常类似于Gnathosaurus在牙齿的方向和牙槽间凹的存在。然而，突触的独特组合使其与 Ctenochasmatidae 的其他成员区分开来。这些包括存在勺状抹刀，与抹刀后的喙部没有明显的分界线，牙齿位于牙槽中，牙槽缘升高，牙槽间凹面较深，牙齿向前（即卧位）和侧向取向，牙齿密度为 1.58-2牙齿/厘米，牙齿间距小于等于牙齿大小，没有背凹，至少在口鼻部的腹侧存在明显的血管和小孔系统，牙齿具有牙釉质的亚毫米纹理和不显眼的隆突。在系统发育分析中，新分类群被检索为与以下物种密切相关的颚龙类颚龙。后者的 Tithonian-Berriaasian biochron 与 Batoví 成员的晚侏罗纪时代是一致的，正如叶尾龙类和兽脚类恐龙的牙齿所暗示的那样。这是迄今为止为数不多的南美侏罗纪翼龙类群之一，也是该大陆最古老的翼龙类群。如在Plataleorhynchus和Lonchodraco 中，Tacuadactylus luciae gen。等 sp. 十一月 显示可以与触觉觅食相关的特征。