Re: Dinosaur Locomotion in Nature

[Jeff Hecht <jeff.hecht@sff.net>]

At 5:29 PM -0600 1/30/02, Williams, Tim wrote:
> Nature 415, 494 - 495 (2002) 
>
>
> Biomechanics: Dinosaur locomotion from a new trackway
>
>
> Ardley Quarry in Oxfordshire, UK, contains one of the most extensive
> dinosaur-trackway sites in the world, with individual trackways extending
> for up to 180 metres. We have discovered a unique dual-gauge trackway from a
> bipedal theropod dinosaur from the Middle Jurassic in this locality, which
> indicates that these large theropods were able to run and that they used
> different hindlimb postures for walking and running. Our findings have
> implications for the biomechanics and evolution of theropod locomotion.

Does anyone know what large theropods existed at this place and time 
(the Middle Bathonian 163 million years old)? How large were they? 
Although the paper gave the stride length, it did not report the size 
of the prints. -- Jeff Hecht