1. College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou, China
2. Guizhou Research Center for Palaeontology, Guiyang, Guizhou, China
3. Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guiyang, Guizhou, China
4. Departamento de Geodinámica, Estratigrafía y Paleontología, Facultad de Ciencias Geológicas, Geológicas, Universidad Complutense de Madrid, Madrid, Spain