The great dinosaur downsizing programme has finally reached its conclusion. After much painting, tiny terrain construction and the slightly disturbing experience of watching enormous prehistoric monsters shrink before my eyes, the tiny dinosaur collection is now complete. Appropriately, the final three take us into the Late Cretaceous, with Tyrannosaurus rex, Triceratops and Ankylosaurus joining their earlier Jurassic relatives.

First comes Tyrannosaurus rex, because no respectable dinosaur collection can possibly finish without one. Normally the undisputed star of the Late Cretaceous, this miniature version still possesses the teeth, the attitude and the ridiculously small arms, although at this scale he looks rather less like the tyrant king of the dinosaurs and more like a very angry lizard demanding to speak to whoever approved the downsizing programme. He may be considerably smaller, but I suspect nobody has had the courage to tell him.

Facing him is Triceratops, carrying three horns, a massive frill and the expression of an animal that has already decided everybody else is wrong. In life this was several tonnes of herbivore capable of making even a large predator reconsider its lunch arrangements. The miniature version retains all the menace, although being small enough to disappear behind a modest piece of terrain does take something away from the intimidation factor.

Finally there is Ankylosaurus, essentially the Late Cretaceous answer to an armoured vehicle. Heavy armour across the body, a club on the tail and apparently designed on the principle that anything worth protecting was worth overprotecting. Even reduced to tiny scale it looks wonderfully solid, although its mighty tail club is now probably more dangerous to neighbouring miniatures in the storage box than to a hungry T-Rex.

And with that, the tiny dinosaur collection is completed. Allosaurus, Stegosaurus and Apatosaurus have been joined by their Late Cretaceous successors, the terrain has been shrunk, the dinosaurs have been shrunk, and an entire prehistoric world now occupies a fraction of the space once required by my larger models.

The age of the dinosaurs may have ended 66 million years ago, but this particular extinction event was caused by something far more powerful than an asteroid.

Limited convention table space!