A number of planes have survived from Roman times.
It is the only original city gate to have survived from medieval times.
The actual method of constructing a linothorax is unknown as no example has survived from ancient times.
It is believed that no fossils could survive from such ancient times.
Any Gaelic form of the name is conjectural, since none survives from medieval times.
There is a ritual of inviting guests for a celebration which has survived from ancient times.
The earlier group are "among the most vivid portraits to survive from Early Christian times.
A few survive from later times, including a first milestone near the porta Appia.
Plans and schematics in the modern sense did not exist until the 17th century and nothing like them has survived from ancient times.
However, the important westwork and crypt have survived from Ottonian times.