CAJ | 학술논문

在多次赴化石产地陕西横山县进行大规模化石发掘后,获得一批完整精美的遗迹标本,为其中鱼类游泳遗迹化石标本建立了新种Undichna prava,并重新修订了U. britannica, U. tricosta两种的特征,通过遗迹形态恢复鱼体长度为50-96 cm,普遍大于以往描述的国内外据遗迹标本恢复的鱼体长度.
재다차부화석산지협서횡산현진행대규모화석발굴후,획득일비완정정미적유적표본,위기중어류유영유적화석표본건립료신충Undichna prava,병중신수정료U. britannica, U. tricosta량충적특정,통과유적형태회복어체장도위50-96 cm,보편대우이왕묘술적국내외거유적표본회복적어체장도.
The authors have visited the Hengshan County, Shaanxi Province, China for a large-scale excavation of fossils several times since they first reported the discovery of Mesozoic fish swimming traces. In the Hengshan County, the original locality of the fossils, a set of complete and exquisite trace specimens have been collected. In particular, U. prava, a new ichnospecies, is proposed on the collected specimens. The criteria for the determination of U. britannica and U. tricosta are revised in this paper. The trace forms are used to reconstruct the fish-body to be at 50-96 cm in length, longer than those of the trace specimens reconstructed inside and outside China.