Dinosaurs Time & Classic Monster Cameo?

The time for the second episode of Series 7 has been confirmed. Dinosaurs on a Spaceship will air Saturday 8 September at 7.35pm on BBC1. It is 45 minutes long.

If you missed the synopsis before, here it is again:

An unmanned spaceship hurtles towards certain destruction – unless the Doctor can save it, and its impossible cargo… of dinosaurs! By his side a ragtag gang of adventurers; a big game hunter, an Egyptian Queen and a surprised member of the Pond family. But little does the Doctor know there is someone else onboard who will stop at nothing to keep hold of his precious, prehistoric cargo.

Guest starring: Rupert Graves (Riddell); Mark Williams (Brian Williams); David Bradley (Solomon); Riann Steele (Queen Nefertiti); Sunetra Sarker (Indira); Noel Byrne (Robot 1); Richard Garaghty (Robot 2); Richard Hope (Bleytal) and Rudi Dharmalingam (ISA Worker).

Interestingly, the full guest cast includes Richard Hope who previously played Silurian Malohkeh in The Hungry Earth/Cold Blood and again last year in The Wedding of River Song. Could this mean a another appearance from the Silurians?