Hmm...yeah. Something that huge that could fly should count as a dragon. If I were around at that time I would scream dragon too. Besides, the names of dinosaurs are too long to scream out loud, and then run. It would be easier to alert your clan but just yelling dragon and peeing your pants. Real time saver.
Here- look at this. Tell me this does not look like some sort of dragon.
http://www.imagesonline.bl.uk/britis...&startid=32582