TY - JOUR TI - The base of the Silurian system in Tasmania T2 - Bulletin of the British Museum (Natural History) Geology VL - 43 UR - https://www.biodiversitylibrary.org/part/83322 PB - BM(NH) CY - London PY - 1988 SP - 191 EP - 194 AU - Banks, Maxwell R. ER -