The platypus is a mosaic life form. In other words, it has characteristics belonging to more than one species.
Although it is a mammal, it lays eggs. It is covered in fur, has milk glands and suckles its young.
Its mouth resembles a bird beak and, again like birds, it has webbed feet.
It has venom and leaves its eggs to hatch in a burrow, like reptiles.
Fossil remains of the creature dating back to the age of the dinosaurs have been found (208-146 million years ago). And it has never changed over the intervening years.
If the platypus were extinct and if its remains had been discovered by Darwinists, then in all probability it would have been heralded as a prominent intermediate form, just like many extict life forms.
The fact is, however, that the platypus IS A FULLY FORMED AND FLAWLESS LIFE FORM that is still alive today and HAS NEVER CHANGED AT ALL OVER THE LAST 200 MILLION YEARS.