Belemnella (Pachybelemnella) obtusa Zone: Difference between revisions
Jump to navigation
Jump to search
Created page with " '''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..." |
No edit summary |
||
| Line 1: | Line 1: | ||
'''Base''': The base of the zone is defined by the first appearance of the index species (Schulz, 1979). | '''Base''': The base of the zone is defined by the first appearance of the index species (Schulz, 1979). | ||
Latest revision as of 14:08, 30 September 2013
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).