The Adolescence of Time (audio story)

 was the forty-second Bernice Summerfield audio story released by Big Finish Productions. It was the second story of the ninth season.

Publisher's summary
Earth is still suffering the after-effects of the asteroid (or something) which collided with the planet many years ago: the dust cloud which blots out the sun shows no sign of settling and the dinosaurs are doomed. Above the cloud, colonies of winged reptiles – more intelligent than any we know of – are fighting to survive. A strange creature calling itself Summerfield appears in their midst: is it destined to save them?

Cast

 * Bernice Summerfield - Lisa Bowerman
 * Peter Summerfield - Thomas Grant
 * Celethua - Lois Baxter
 * Tektekachuan - Tim Block
 * Ixotta - Emily Pithon

Continuity

 * Peter speaks of when the time ring found him as a child. (AUDIO: The Grel Escape)