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华北中、晚石炭世含煤地层中含有丰富的牙形石,但各地产出情形不一。所发现的华北中、晚石炭世牙形石计有14属51种。中石炭世本溪组牙形石动物群共划分出两个组合,自下而上为: 1.Idiognathodus shanxiensis-Neognathodus bassleri; 2.Neognathodus roundyi-Streptognathodus parvus. 晚石炭世太原组和山西组牙形石动物群共划分出两个组合,自下而上为: 3.Streptognathodus elegantulus-Idiognathodus hebeiensis; 4.Streptognathodus elongatus-S. wabaunsensis-S. fuchengensis. 上述四个牙形石组合可与我国新疆、美国和苏联相当的牙形石组合或带对比。
In North China, the Late Carboniferous coal-bearing strata are rich in conodont, but the output varies from place to place. Found in North China, the late Carboniferous conodont plan has 14 genera and 51 species. The Central Plains Carboniferous conodont fauna groups are divided into two combinations, bottom-up: 1.Idiognathodus shanxiensis-Neognathodus bassleri; 2.Neognathodus roundyi-Streptognathodus parvus. Late Carboniferous Taiyuan and Shanxi group of conodont Animal groups are divided into two combinations, bottom-up as follows: 3. Streptognathodus elegantulus-Idiognathodus hebeiensis; 4. Streptognathodus elongatus-S. Wabaunsensis-S. fuchengensis. The above four conodont combinations with our country Xinjiang, the United States and Soviet equivalent conodont or belt contrast.