On a new species of Shergoldia Zhang & Jell, 1987 (Trilobita), the family Tsinaniidae and the order Asaphida
نویسندگان
چکیده
THE SANDU FORMATION, consisting mainly of mudstone and marl, crops out sparsely in Guole Township, Jingxi County, southwestern Guangxi Province, China (Fig. 1). It yields a rich fauna of trilobite fossils, including species belonging to Shergoldia, Tamdaspis and Sinosaukia, which together indicate a late Furongian (latest Cambrian) age. These fossils are both abundant and well preserved. A large proportion of the material comprises articulated specimens, and a variety of ontogenetic stages are represented. The new material of Shergoldia laevigata sp. nov. is the first record of completely articulated exoskeletons belonging to the genus.
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