化石带（fossil zone）是生物地层学的基本单位，是根据地层中所含有的生物化石内容和特征所划分出来的地层单位。包括组合带、延限带、顶峰带。化石带(5张)
主要结合介形类化石带、砂组划分研究成果，通过对钻井资料的岩性—电性、旋回及旋回成因分析，划分四级层序及四级层序的体系域。
Combining the belts of Cypridea fossils and achievements of studying the sandstone groups, we identify the four-rank sequence and its system tract through analysis lithology-electricity of logs.
由石油勘探引起的划带重点化石已经显然由大化石转移到微体化石。
The shift in emphasis from the use of macrofossils to microfossils for zonation, caused by oil exploration, has already been noted.
中华龙鸟化石的某些部分保存十分完好，科学家们甚至发现了包含色素的细胞结构，他们认为这种猫类大小的史前动物是彩色的，甚至还拥有一条带条纹的尾巴
Some of its fossils are so well preserved that scientists can see traces of cell structures that contained pigments. The finding led to colorful views of the cat-size animal, down to its striped tail.
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