Few ornamental stones can be securely dated to an early period.
A cup, bearing the inscription in Greek in the Euboean script "I am the cup of Nestor," can be securely dated to before 700 bce.
Little original work can be securely dated to the period after Wulfstan's death (1023), but the continued vigour of the Anglo-Saxon Chronicle shows that good Old English prose was written right up to the Norman Conquest.
The extreme antiquity of the caves is clear, though their exact dates remain elusive: from the paleographic evidence they can be securely dated to between the second century BC and the first century AD, but most scholars believe that between 90-70BC is the most likely period of construction.
The results of our analyses show that those two, Tirup 292 and St. Albani 90, can be securely dated to pre-Columbian times.
The burial was securely dated to the Late Classic.
Although no structures have been securely dated to this period, a number of Late Preclassic artifacts have been recovered, including 63 figurines and a chert blade.
The Devil's Dyke, for example, the Danubian earthworks traditionally attributed to Diocletian, cannot even be securely dated to a particular century.
His last sure mention in the historical record is on 9 August 1202, when he was serving as a judge-delegate for Pope Innocent III, but he may have been alive as late as 1213, as he was part of a papal panel deciding a case that can only be securely dated to between 1198 and 1213.
However, no human remains are securely dated to the first phases of the Aurignacian, now called Protoaurignacian [50] and relatively few to the subsequent, so called "Ancient Aurignacian", which leaves open the possibility of a significant biological Neanderthal input on the first wave of modern colonisers [51] [53].
However, the similarity of the pattern with modern humans suggests that hominins had the capacity for stone tool use more than half a million years before such tools are securely dated in the fossil record.
