"Aquatilavipes is an early bird genus known only from its footprints, which are modern looking (not reptilian like Archaeopteryx). It lived during the early Cretaceous period, about 130 million years ago; these are the oldest-known bird tracks. Fossil footprints have been found in Canada." (from enchantedlearning.com)
Edit: Strange. I can't find out much more about this from Google or Wikipedia. Though there's something called A. swiboldae.