Deposition took place throughout most of the Jurassic period, from the Hettangian stage to the mid-Tithonian, as determined from its fossil content, including ammonites, molluscs and microfossils.
Deposition took place throughout most of the Jurassic period. This was from the Hettangian stage to the mid-Tithonian including ammonites, molluscs and microfossils. This was as determined from its fossil content.