“卡以头砂页岩层”一名,系1938年王竹泉、毕庆昌在调查云南宣威打锁坡煤田时所创,当时为缩小下部含煤组范围,将其分出单独命名,因系连续沉积,其时代归属二迭统。 建国以来,通过大量地质普查、勘探工作,已证实“卡以头砂页岩层”属早三迭世早期沉积。但在其底部采获Eumo prhotis属,则未见报导。 我们在矿区进行煤田地质勘探工作中,但奕阳同志首次 “Card to head sand shale” one, in 1938 Wang Zhuquan, Bi Qingchang in Yunnan Xuanwei hit the slope when the coal was created, was to narrow the scope of the lower coal-bearing group, separate it named separate, because the Department of continuous deposition , Its era belongs to two Diego. Since the founding of the People’s Republic of China, a large number of geological censuses and exploration work have confirmed that the “card-head sand shale” has been deposited in the early Triassic. However, there was no report of the genus Eumo prhotis harvested at its bottom. We are in the coalfield geological exploration work, but Comrade Yi Yang for the first time