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中国已知的楯齿龙目(Placodontia)化石仅见于贵州省西南部地区,其中豆齿龙亚目(Cya- modontoidea)产自关岭地区的法郎组瓦窑段,时代为晚三叠世卡尼期;楯齿龙亚目(Placodon- toidea)产自盘县的关岭组Ⅱ段,时代为中三叠世安尼期。本文记述的豆齿龙类新属种——康氏雕甲龟龙(Clyphoderma kangi gen.et sp.nov.)产于云南富源的法郎组竹杆坡段,属中三叠世拉丁期。正型标本保存于浙江自然博物馆(编号:M 8729),其头骨高度愈合,代表一个完全成年之个体,根据以下特征明显区别于我国的Psephochelys和欧洲的Psephoderma:1)头骨枕部具3枚大型的锥状鳞;2)背甲甲片结构更为复杂,具明显的放射状沟/脊结构。到目前为止,康氏雕甲龟龙是龟龙科(Placochelyidae)中惟一的中三叠世属种,该科的其他成员全部发现于上三叠统。
The known Placodontia fossils in China are found only in the southwest of Guizhou Province. Among them, Cya-modontoidea is from the Falang Formation of the Guanling Formation in the Guanling area, dating to the Late Triassic Nymphattina; Placodon-toidea is from the second member of Guanling Formation in Panxian, and the age is the Middle Triassic Anixian period. This article describes a new genus Dendrolimus, Clyphoderma kangi gen.et sp.nov., Was found in the Zhupanpo Formation of the Falang Formation in Fuyuan, Yunnan Province, belonging to the Middle Triassic Latin Period. The positive specimen was preserved in the Zhejiang Museum of Natural History (No. M 8729). The skull was highly healed to represent a fully adult individual, clearly distinguishable from Psephochelys in China and Psephoderma in Europe according to the following characteristics: 1) The skull pillow has three large Of the cone-shaped scales; 2) carapace structure is more complicated, with a pronounced radial groove / ridge structure. Up to now, Kantons carved tortoises are the only Middle Triassic genera in Placochelyidae. All other members of this family are found in the Upper Triassic.