 Pulses of hypoxic or anoxic conditions and perhaps periodic episodes of heavy siltation—the lagoon laid down up to 90 ft/30 m of limestone during its existence— may have been involved.The numerous genera and many body types represented by fossils are witnesses to a highly diversified paleoecology with many available niches to be filled by specialist fauna.Nguyễn Quốc Cường

Nguyễn Quốc Cường (born 1952) is the People's Council Chairman of Bắc Giang Province of Vietnam.