View source for Belemnella (Pachybelemnella) obtusa Zone



'''Base''': The base of the zone is defined by the first appearance of the index species (Schulz, 1979).

'''Range of the index species''': The range of the index species is co-extensive with the nominate zone (Schulz, 1979). In the Kronsmoor - Hemmoor sections, the index species is abundant, and co-occurs with ''Belemnella'' (''B''.) ''lanceolata'' (at the base) and sporadic ''B''. (''B''.) ''longissima'' (Schulz, 1979).

'''Biostratigraphical correlation''': The zone equates with most of the upper part of the ''B''. ''lanceolata'' Zone s.l. of the standard macrofossil zonal scheme.

'''Lithostratigraphical correlation''': The zone equates with the upper part of the Sidestrand Chalk Member and the Trimmingham Sponge Beds Member (Johansen & Surlyk, 1990).

[[Category:Belemnite zonation of Schulz (1979, 1985) for the Lower Maastrichtian of Norfolk | 003]]