As far as a list of archaeological sites I suppose it must depend on where you are.
Here (New Zealand) a record is kept of all sites of archeological interest by the New Zealand Historic Places Trust. It is a criminal offence to knowingly interfere with such a site unless permission is given by the said trust.
Permission will only be given after the local iwi (sub-tribe) has been consulted and their veiws and traditions have been taken into consideration, ie no eating food or smoking on a dig site as these are noa or common activites and connot be done on sacred ground without causing offence.
Arangements must be made for what should occur should human remains be discoverd (usually stop digging) and frequently a member of the iwi will participate in the dig as an observer.
This applies even for european sites as it is not uncommon for excavations to reach the bottom level and find pre-european remains.
The Trust must be notified of the results of the excavation in a peliminary report as well as suppling a copy of the later full report when it is produced.
As far as I know no one has ever been prosecuted for an illegal excavation although running battles occur with bottle collectors who think they have a god given right to destroy archeological evidence for their own amusement and profit.