Paleomagnetic and palynologic investigations in the Upper Valda Basin, (Central Italy), calibration of an Early Villafranchian fauna.
Reference:
Albianelli,A. et al. (1997)
Paleomagnetic and palynologic investigations in the Upper Valda Basin, (Central Italy), calibration of an Early Villafranchian fauna. Rivista Italiana di Paleontologia e Stratigrafia
Vol. 103 # 1 P. 111- 118