摘要
The fish swimming trail fossils are rare and, therefore, precious. The specimen de-scribed abroad are generally smaller or more poorly preserved. The specimens used in the pre-sent study and derived from the Mesozoic strata in Hengshan County, Shaanxi Province, China, are rare because of their completeness (with the length of the specimen reaching 4 m), exquisiteness and largeness in trace body. These specimens, classified as four ichnospecies, including two new ones, show the morphological pattern of the fish swimming trails. The trace fish bodies are calculated to be 32—92 cm long.
The fish swimming trail fossils are rare and, therefore, precious. The specimen de-scribed abroad are generally smaller or more poorly preserved. The specimens used in the pre-sent study and derived from the Mesozoic strata in Hengshan County, Shaanxi Province, China, are rare because of their completeness (with the length of the specimen reaching 4 m), exquisiteness and largeness in trace body. These specimens, classified as four ichnospecies, including two new ones, show the morphological pattern of the fish swimming trails. The trace fish bodies are calculated to be 32—92 cm long.
基金
This work was supported by both the National Natural Science Foundation of China(Grant No. 49972086)
the project entitled "Continental Ichnofabric Research and Its Application to High-resolution Sequence Stratigraphy" in CNPC Reservoir Key Laboratory.
