WEBOct 6, 2020 · The key postures of the Ashtanga Primary Series are Utthita Hasta Padangustasana (Extended Hand to Big Toe Pose), Marichyasana D (Marichi's Pose D or Sage Twist D), Supta Kurmasana (Sleeping Tortoise Pose), and Urdhva Dhanurasana (Upward Bow, also known as Wheel Pose).