DISCOVERY OF TRILOBITE GENUS ZHENBASPIS FROM THE LOWER CAMBRIAN NIUTITANG BIOTA AT HEISHAPO,SONGLIN,ZUNYI,GUIZHON,CHINA
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
The Niutitang Formation of Lower Cambrian located at Heishapo of Zhongnan Village, Songlin Town, Zunyi County, Guizhou, South China yields the Niutitang Biota(Zhao Yuanlong et al., 1999; Steiner et al., 2001). It was preserved in black mudstone of the Niutitang Formation. After weathering,the exposed black mudstones become white-gray shales or mudstones. The Niutitang Biota was composed of over 23 genera belonging to 7 phyla as well as some problematic taxa. Because these fossils occur in both upper and lower parts of the Niutitang Formation, the Biota was divided to Upper and Lower Biota(Zhao Yuanlong et al., 1999; Steiner et al., 2001; Yang Xinglian et al., 2000, 2003). The main groups of fossils are sponges and arthropods(Zhao Yuanlong et al., 2002). Trilobite is rich in specimens ,but very rare in species. Recently, some genera and species have been found at the middle and lower parts of the Niutitang Formation. The occurrence of theses taxa from the Niutitang Biota is quite significant. They not only provide new information about palaeogeographical distribution of trilobite, but also enrich the composition in the Niutitang Biota.
