Time spillage

Time spillage is a temporal phenomenon in which time accelarates out of control, causing non-time sensitives to age rapidly. This usually occurs in the presence of a TARDIS which has either been tampered with or was faulty.

When the Rani visited Killingworth in the 19th century to gain the chemicals she needed on Miasimia Goria, the Doctor gained access to her TARDIS and tampered with the controls, setting it to allow time to accelerate when the Rani dematerialised. This flung the Rani and the Master towards the walls of the TARDIS, stopping her from undoing the effects. Her samples of dinosaur embyros started to grow during this effect. (DW: The Mark of The Rani)