大兴安岭南部石炭纪(?)类在解放前没有报导过,解放后在区域地质调查中才被陆续发现。1969年原内蒙第二区测队在内蒙巴林左旗四方城发现少量可能属于晚石炭世(?)类。 1975年以来,内蒙区测大队七分队与作者在大兴安岭南部内蒙西乌珠穆沁旗猴头庙一带发现了大量晚石炭世(?)类。该地上右炭统连续沉积,(?)、珊瑚、苔藓虫和腕足类化石甚为丰 The Carboniferous (?) In the southern part of the Daxinganling Mountains was not reported before liberation, and was discovered in the regional geological survey after liberation. In 1969, Inner Mongolia No.2 Submarine Team found a small amount possibly belong to the Late Carboniferous (?) Category in the Quartet City of Balinzuoqi, Inner Mongolia. Since 1975, a number of Late Carboniferous (?) Types were discovered by the Seventh Detachment and the author of the Inner Mongolia Regional Measurement Brigade and the author in the Hountamiao area of ​​Ujumqinqi, Inner Mongolia, in the Greater Xing’an Mountains. The succession of the Upper Carboniferous, (?), Corals, bryozoans and brachiopods is very abundant