Astrosaurs．[9]，The planet of peril Astrosaurs．The Planet of Peril Astrosaurs．[19]，The forest of evil Astrosaurs．[5]，The skies of fear Astrosaurs．[17]，The twist of time Astrosaurs．[3]，The seas of doom Astrosaurs．[11]，The claws of Christmas Astrosaurs．[15]，The dreams of dread Other title:The planet of peril Astrosaurs．The Skies of Fear