21. It is the only complete representative of the courtly branch in its formative period . 22. More than 250 Formative period burials have been scientifically excavated at Chiapa de Corzo. 23. Concentrated in highland Nayarit and adjoining Jalisco, these tableaus present rich late Formative period . 24. Many consider Donray's New York years as his formative period . 25. The 1960s represented a formative period for television development. 26. It is not clear if Forse remained involved with the party after its formative period . 27. In the Middle Formative period , some of the slipped vessels were decorated with resist pattern. 28. Influential board members from this formative period included painter Thomas Eakins and sculptor Augustus Saint-Gaudens. 29. The film documents the subject of mountain bike history during this formative period in Northern California. 30. The settlement had a long continuous occupation running from the Middle Formative Period through the Postclassic.