贵州东部寒武系苗岭统乌溜阶凯里组中上部保存了大量褶颊虫类三叶虫Xingrenaspis xingrenensis蜕壳标本,为揭示这类三叶虫的蜕壳行......

本文通过对采自湖南省永顺县万民乡Llandovery统Telechian阶秀山组上部近600枚CoronocephalusgaoluoensisWu(高罗王冠虫)化石标本......