Was there a prehistoric crocodile with nostrils on its head / a horn on its nose?

Factual Questions
1

I remember years ago when my grade 4 class did a unit on dinosaurs. From the books we had in class about the topic, I remember illustrations of two prehistoric crocodiles. The way I remember them, one of them was depicted as having nostrils on top of its head instead of on the tip of its nose; I remember the other, which as I recall was said to have been about 15 feet long (and may have been an illustration of the same species as the first) as having a rhino-like horn on its nose.

Did I misinterpret these pictures or do they reflect the artist’s knowledge of certain fossils - and if so, would this knowledge be maintained today? Were there really prehistoric crocodiles which are believed to have had breathing holes on their head or even a “rhino” horn on their nose? I have googled around for something like this, but haven’t found anything satisfactory.

2

Iguanadon used to be portrayed with a horn on its head or snout (the structure was later realised to be a spike on the forelimb of the creature)

3

This is Benjamin Waterhouse Hawkins’ early attempt to reconstruct an iguanodon. Is this it?

4

Possibly phytosaurs, which were primitive crocodile-shaped reptiles. They have long snouts but the nostrils emerged at the head bump near the eyes, but while some of them had prominent ridges, none had distinct horns.

5

I don’t think it was an iguanodon. Perhaps I misremembered the horn on the nose or mistook something else for one. The creature I remember was distinctly like a giant monster crocodile.

This is most probably it.

6

A number of Alligators had dummy horns attached to them, cosmetically, for shoddy 50ds/60s sci-fi flicks, to pose as Dinosaurs.