Table 1 Data of fossil abundance, stratigraphic sequences and localities
N | Stage | Stratigraphic sequence | Ammonite zones or occurrences | Estimated time range (My) from Scott (2014) | Locality (Fig. 1) | |
|---|---|---|---|---|---|---|
Palaeoecology 1 | 87 | Early Barremian | Altmann Mb. (Tierwis Fm.) | Nicklesia pulchella and Kotetishvilia compressissima zones | 2.41–2.90 | Altmann Sattel |
Palaeoecology 2 | 96* | Late Barremian | Lower Schrattenkalk Mb. (Schrattenkalk Fm.) | No ammonite record | NA | Säntis |
Palaeoecology 3 | 255 | Early Albian | Garschella Fm. | Douvilleiceras mammillatum and Leymeriella tardefurcata zones | 2.75 | Bergli |
Palaeoecology 4 | 208 | Early late Albian | Garschella Fm. | ?Mortoniceras inflatum zone and occurences of Hysteroceras | 2.53–? | NE of Alpstein |
Palaeoecology 5 | 132 | Latest Albian–earliest Cenomanian | Kamm Bed (Garschella Fm.) | Occurrences of Stoliczkaiella and Mantelliceras mantelli | 2.53–3.25 | Hornwald |
Palaeoecology 6 | 70 | Latest Albian–earliest Cenomanian | Säntis |