Type
Zone
Age range
159–156.8 Ma
Late Jurassic
Oxfordian
Pictonia baylei
Ringsteadia pseudocordata
Perisphinctes cautisnigrae
159.0158.9158.8158.7158.6158.5158.4158.3158.2158.1158.0157.9157.8157.7157.6157.5157.4157.3157.2157.1157.0156.9156.8