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本文记述了发现于云南昭通箐门沟箐门水库附近的几件早期脊椎动物化石，其中包括盔甲鱼类一新种，层位是下泥盆统坡松冲组。新种云南龙门山鱼（Lungmenshanaspisyunnanensissp.nov）与属型种江油龙门山鱼在纹饰上存在明显等异。其头甲侧凹应为自然边缘，龙门山鱼侧背孔并不存在。本文描述的骨鳞鱼类为目前所知层位最低的骨鳞鱼类化石，其额筛甲前端向下强烈弯曲，具分离的前上颌骨，具有杨氏鱼的一些特征。其眼眶凹非常大且深，下颌垂直凹线的位置十分靠前，k／m值在已知的骨鳞鱼目种类中为最大。昭通三歧鱼（SanqiaspiszhaotongensisLiu）新材料补充了正型标本在感觉管系统保存上的不足。文中对有关的生物地层问题也作了讨论。
This paper describes a few early vertebrate fossils found near the Qiongmen Reservoir in Zhaotong, Yunnan Province, including a new species of armor fish, which is the Lower Devonian Pozongchu Formation. The new species of Lungmenshanaspisyunnanensissp.nov in Yunnan and the type of Jiangyou Longmen mountain fish in ornamentation are obviously different. Its headdress side concave should be the natural edge, the Longmen mountain fish back hole does not exist. The osteosarcoma described in this article is the lowest known osteosarcoma fossil in the lowest horizon so far. The frontal end of the mesoscopia sciatica is strongly curved downwards, with the separation of the anterior maxilla with some characteristics of Young’s fish. The orbital concave is very large and deep, vertical chin of the lower jaw position is very forward, k / m value in the known species of the highest degree of Bombycina. The new material of Sanqiaspiszhaotongensis Liuz supplemented the lack of positive specimen preservation in the sensory tube system. The article also discussed the issue of biological strata.