The Ninth Dynasty of ancient Egypt (notated Dynasty IX) is often combined with Dynasties VII, VIII, X and XI (Thebes only) under the group title First Intermediate Period. Dynasties IX and X date approximately from 2160 to 2025 BC. The dynasty that seems to have supplanted the 8th Dynasty is extremely obscure. The takeover by the rulers of Herakleopolis was violent and is reflected in Manetho's description of Achthoes, the founder of the dynasty, as 'more terrible than his predecessors', who 'wrought evil things for those in all Egypt".