Institute of Palaeontology; Yunnan Key Laboratory of Earth System Science; Yunnan Key Laboratory for Palaeobiology; MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment; Yunnan University; Kunming 650500; China; State Key Laboratory of Palaeobiology and Stratigraphy; Center for Excellence in Life and Paleoenvironment; Nanjing Institute of Geology and Palaeontology; Chinese Academy of Sciences; Nanjing 210008; China.
Institute of Palaeontology; Yunnan Key Laboratory of Earth System Science; Yunnan Key Laboratory for Palaeobiology; MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment; Yunnan University; Kunming 650500; China; School of Earth Science; Yunnan University; Kunming 650500; China.
Zootaxa. 2023 Dec 29;5396(1):50-57. doi: 10.11646/zootaxa.5396.1.10.
A new spinicaudatan species Triglypta jiyuanensis Liao & Huang sp. nov. is described from the Upper Jurassic Maao Formation in the Jiyuan Basin, northwestern Henan Province, China. The carapace of the new species is ornamented with punctae, linear arrangements of punctae, and radial lirae. The new species differs from those of the early Triglypta forms from the Middle Jurassic but closely resembles T. jianchangensis Wang, 2014 from the Upper Jurassic Tiaojishan Formation of western Liaoning Province. Our study provides new biostratigraphic evidence supporting that the Maao and Tiaojishan formations can be correlated. Moreover, we suggest that the Yangshuzhuang Formation in the Jiyuan Basin could correlate to the Haifanggou and the Longmen formations in the Yanliao area.
一种新的旋尾类物种 Triglypta jiyuanensis Liao & Huang sp. nov. 被描述于中国河南省西北部济源盆地的上侏罗统毛庄组。新种的背甲饰有刻点、刻点的线状排列和放射状脊。新种与中侏罗世早期的 Triglypta 形态不同，但与来自辽宁西部上侏罗统调脊山组的 T. jianchangensis Wang, 2014 非常相似。我们的研究为支持毛庄组和调脊山组可以进行对比提供了新的生物地层学证据。此外，我们建议济源盆地的羊树庄组可以与燕辽地区的海房沟组和龙门组对比。
