CAJ | 학술논문

内蒙古宁城道虎沟地区的晚中生代地层十分发育,产状平缓,主要为一套产有丰富动、植物化石的凝灰质泥岩和粉砂岩,并夹有数层火山岩.从区域上来看,在西台子一带主要为早白垩世义县组的地层,产有丰富的热河生物群的化石,常见者有鱼类Lycoptera davidi,Peipiaosteus pani,Yanosteuslongidorsalis,Protopsephurusliui和鸟类Confuciusornis sanctus但在道虎沟-小西沟一带主要为中-晚侏罗世髫髻山组的地层,产有丰富的道虎沟生物群的化石,常见者有蝾螈Jeholotritonparadoxus和Chunerpeton tianyiensis,翼龙Jeholopterus ningchengensis和Pterorhynchus wellnhoferi,手盗龙类Scansoriopteryx heilmanni和(?)Pedopenna daohugouensis[本文对Xu等(2005)描述的道虎沟足羽龙(Pedopenna daohugouensis)的原始产地存有疑义],昆虫Mesobaetis sibirica,Mesoneta antiqua,Rhipidoblattina(Canaliblatta)hebeiensis,Brunneus haifanggouensis,Palaeontinodes haifanggouensis等,叶肢介Euestheria ziliujingensis,E.haifanggouensis,E.jingyuanensis和E.luanpingensis,植物Cladophlebis(Osmunda?)sp.,Anomozamites angulatus,A.(Trymia?)sp.,Cycadolepisp.,Ginkgoites sp.,Pityospermus sp.,Pityocladussp.,Zamitesgigas,Yanliaoia sinensis和Coniopteris burejensis等.根据区域地质构造、地层分布、生物群特征和地质年代学资料分析,笔者确信道虎沟生物群的时代为中-晚侏罗世(卡洛夫阶-牛津阶),根本不可能将其归于早白垩世热河生物群.
내몽고저성도호구지구적만중생대지층십분발육,산상평완,주요위일투산유봉부동、식물화석적응회질니암화분사암,병협유수층화산암.종구역상래간,재서태자일대주요위조백성세의현조적지층,산유봉부적열하생물군적화석,상견자유어류Lycoptera davidi,Peipiaosteus pani,Yanosteuslongidorsalis,Protopsephurusliui화조류Confuciusornis sanctus단재도호구-소서구일대주요위중-만주라세초계산조적지층,산유봉부적도호구생물군적화석,상견자유영원Jeholotritonparadoxus화Chunerpeton tianyiensis,익룡Jeholopterus ningchengensis화Pterorhynchus wellnhoferi,수도룡류Scansoriopteryx heilmanni화(?)Pedopenna daohugouensis[본문대Xu등(2005)묘술적도호구족우룡(Pedopenna daohugouensis)적원시산지존유의의],곤충Mesobaetis sibirica,Mesoneta antiqua,Rhipidoblattina(Canaliblatta)hebeiensis,Brunneus haifanggouensis,Palaeontinodes haifanggouensis등,협지개Euestheria ziliujingensis,E.haifanggouensis,E.jingyuanensis화E.luanpingensis,식물Cladophlebis(Osmunda?)sp.,Anomozamites angulatus,A.(Trymia?)sp.,Cycadolepisp.,Ginkgoites sp.,Pityospermus sp.,Pityocladussp.,Zamitesgigas,Yanliaoia sinensis화Coniopteris burejensis등.근거구역지질구조、지층분포、생물군특정화지질년대학자료분석,필자학신도호구생물군적시대위중-만주라세(잡락부계-우진계),근본불가능장기귀우조백성세열하생물군.