- I remember finding this book in my dad's old college collection so possibly publish in the 50-60's
- Cover had a white or silver tower on a background of a lot of orange or an explosion
- A boy or man laying on his stomach on a silver metal plate that looked to be zooming from the tower.
- a winged bat/pterodactyl like creature with claws flying above the man
- I remember a young man in a rookery of sorts raising said winged things. The man had an amulet. Something happens where the man escapes to a tower the amulet reacts to the tower and he and one of the winged creatures he was caring for were transported far away
I remember seeing a cover on a paperback book by Andre Norton with a boy riding a device like a surfboard flying in the air. I don't remember if there was a tower or a "terror dactyl" on the cover.
If my memory is correct I probably saw the cover in the 1960s so a book or edition published after 1970 would probably not be the one I remember.
Unfortunately Andre Norton was very prolific, so that does not limit it down very much.
But after searching at the Internet Speculative Fiction Database I found a cover which should be the one I remember, the cover of the 1963 Ace Books edition of Star Gate.
From the plot summary on Wikipedia:
Riding his larng Cim, the four-eyed analogue of a horse, and accompanied by his pterodactyl-like hunting mord, Vorken, he leaves the only world he has known, following a map that his grandfather gave him. Falling in with a party of cross-breeds and a Star Lord, he helps them fight off outlaws and follows them through a pair of luminous webs to another Gorth. As they pass through the Star Gate Kincar is burned by an amulet, a Tie, that he wears. Joined by others, the group takes refuge in an abandoned keep that they find on their new world. Kincar meets a healer, Lady Asgar, who treats his burn while Lord Dillan tells him about many worlds and of travel between them. They have come to a Gorth that they had not intended to occupy, so they will have to build another Star Gate.