The zone of Schlotheimia marmorea (Lower Lias) Hettangian or Sinemurian?

• 21 November 1983
• journal article
• Published by Schweizerbart in Newsletters on Stratigraphy
• Vol. 12  (3) , 123-131
• https://doi.org/10.1127/nos/12/1983/123

Abstract