- Jul 2017
- Crows nest
I don't see ankylosaurs and stegosaurs being the fasted kids on the block. Ceratopsians I think somewhat faster, maybe capable of a burst of speed in a charge, if they did charge, but surely they did. But with hadrosaurs there may be some capability for decent speed. I'm not sure what the current consensus is for average hadrosaur speed, it varies depending on who you read, but it seems that the size of the hadrosaur caudofemoralis muscles may be bigger than has been previously thought, and so given them the ability to run, at least short term, reasonably fast, fast enough for a T-rex to have to run after them and just manage to get a bite on it's tail as it flees. So, even without the avian respiratory system, because of it's large tail and muscle group, which mammals do not have, hadrosaurs at least, could have potentially shifted themselves, and so their predators would also have needed to run as fast, or faster in the initial charge.