Ugliness, like beauty, is in the eye of the beholder. However, given contemporary standards and recent depictions, I'd say Velociraptor mongoliensis would be a strong contender.
Stop leach by, ugly brontosaur. ugly ugly ugly, dinosaur duck.
She took of her wig and false eyelashes - she turned out to be talented, ugly dinosaur.
is the tyrannosaurus rex the most powerful dinosaur
the brontosaurus wasn't a dinosaur it was a carmasaurus head on another dinosaur's body.
It depends what type of dinosaur it is, most dinosaur books have pictures of them though, but most of them looked like big lizards or monsters.
A Shandodon is a mythical dinosaur that has evolved and is the most clever dinosaur ever discovered!
Alberta, specifically the region around Drumheller, is known for having the most dinosaur fossils in Canada. The area is home to the Royal Tyrrell Museum, which showcases a wide variety of dinosaur specimens.
most theropods
the stegasores
The superlative of ugly would be ugliest, or most ugly.
The tallest dinosaur ever discovered is a Sauroposeidon.However, this is not the longest or most massive dinosaur.
Cheryl Bardoe has written: 'The ugly duckling dinosaur' -- subject(s): Dinosaurs, Fiction, Tyrannosaurus rex, Ducks