BGS Zone 1 (=UKB1 and 2 of Hart et al., 1989): Difference between revisions
Jump to navigation
Jump to search
(Created page with " '''Base: '''The inception of ''Plectina mariae'' and ''Hagenowina anglica''. ''Flourensina intermedia'' and ''Hagenowina advena'' become common. The extinction of the Albian...") |
No edit summary |
||
| Line 1: | Line 1: | ||
'''Base:''' The inception of ''Plectina mariae'' and ''Hagenowina anglica''. ''Flourensina intermedia'' and ''Hagenowina advena'' become common. The extinction of the Albian taxa such as ''Arenobulimina chapmani'' and ''Arenobulimina sabulosa''. | |||
'''Base: '''The inception of ''Plectina mariae'' and ''Hagenowina anglica''. ''Flourensina intermedia'' and ''Hagenowina advena'' become common. The extinction of the Albian taxa such as ''Arenobulimina chapmani'' and ''Arenobulimina sabulosa''. | |||
'''Top: '''The inception of the succeeding zonal index | '''Top: '''The inception of the succeeding zonal index | ||
Latest revision as of 11:24, 1 October 2013
Base: The inception of Plectina mariae and Hagenowina anglica. Flourensina intermedia and Hagenowina advena become common. The extinction of the Albian taxa such as Arenobulimina chapmani and Arenobulimina sabulosa.
Top: The inception of the succeeding zonal index
Biomarkers:
- Vialovella praefrankei becomes extinct in the lower part of the N. carcitanense macrofaunal subzone.
- Facies related taxa such as Bulbophragmium aequale folkestonensis, which is found in the Glauconitic Marl of southeastern Kent, were used by Hart et al (1989) to define his UKB 1 Zone.
Macrofaunal correlation: M. mantelli Zone
Age: Early Cenomanian