  Here is a rough chronological list of the members of the Dialectical school. Clinomachus of Thurii, a pupil of Eubulides of Miletus, is named as founder of the sect, but may have been given this title only in hindsight (DL 1.19 and 2.112, Sedley 1977 n.16). Euphantus of Olyntus, another pupil of Eubulides, probably born before 349 BC, may have been the earliest member of the sect. The name ‘Dialectical school’ is reported to have been introduced by its member Dionysius of Chalcedon, active around 320 BC. The most important philosopher of the sect is Diodorus Cronus, who taught in Athens and Alexandria around 315-284 BC. He left no writings. His most famous pupil is Zeno of Citium, founder of the Stoa. The dialectician Aristides belongs to the same generation as Diodorus Cronus. Alexinus (c. 339-265) may have belonged to the sect. The second important philosopher of the dialectical school is the logician Philo (sometimes referred to as Philo of Megara, although we do not know his city of origin); he studied with Diodorus. He wrote a dialogue Menexenos and possibly was the author of a work On Signs and a work On Schemata. All of these are lost. Diodorus Cronus’ five daughters Menexene, Argeia, Theognis, Artemisia and Pantacleia are all said to have been logicians, and thus may have belonged to the school. Finally, the dialectician Panthoides flourished c.280-275 BC, and the dialecticians Aristoteles and Artemidorus can be dated around 250 BC.