| Computer Code: |
GMB |
Preferred Map Code: |
R2a1 |
| Status Code: |
Index Level |
| Age range: |
Marsdenian Substage (CZ)
— Marsdenian Substage (CZ) |
| Lithological Description: |
[Duplicate: use R2A1] |
| Definition of Lower Boundary: |
none recorded or not applicable
|
| Definition of Upper Boundary: |
none recorded or not applicable
|
| Thickness: |
none recorded or not applicable
|
| Geographical Limits: |
none recorded or not applicable
|
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
Reticuloceras Gracile Marine Band [Obsolete Name and Code: Use GMB, GRMB, R2A1]
(-4678)
|
| Alternative Name(s): |
Bilinguites gracilis Marine Band
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| none recorded or not applicable |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E086
E078
E077
E142
E059
|
