SAN DIEGO -- This weekend will be San Diego's first chance to see the fossilized remains of a mammoth and gray whale found in downtown San Diego. Officials with the San Diego Natural History Museum said both animals are at least 300 millennia old.

The skull and two tusks from a mammoth were first discovered February 3, 2009. Three weeks later, directly underneath the mammoth, paleontologists found the fossil remains of a gray whale.

At the San Diego Natural History Museum Wednesday, scientists said they estimate the mammoth was about 14-feet tall and walked through the East Village area some 300,000 years ago. The whale floated above the area, when it was clearly still submerged, 500,000 years ago.

The fossils will be on display this weekend only at the Natural History Museum. Next week, they will once again be taken away for further study.

The fossils were discovered while construction crews were digging a hole to lay the foundation for the new Thomas Jefferson School of Law building. Construction was never delayed by the discovery.

The area where the fossils were found has been replaced by an underground garage, 30-feet below street level.