As Storey and colleagues report in another article in the Proceedings of the National Academy of Sciences, the site has been confidently dated to 700-1390 AD, meaning these bones are the earliest evidence of chickens in the Americas, having arrived at least a century before Columbus.
They represent some of the latest Pictish era monuments and can be confidently dated to the late 9th/early 10th centuries.
The late origin of the extant eukaryotic diversity implies a substantial time gap between LECA and the earliest occurrence of (apparent) eukaryotic fossils which are confidently dated to times in the early Proterozoic (>1,500 Mya) [ 12, 26- 28, 31].
Earliest references to the Abstractiones appear from the late thirteenth century in a manuscript at Worcester Cathedral Library, Q. 13, which is confidently dated no later than 1295, and probably as early as 1270.[4] Worcester Q. 13 contains four references to the "Magister Abstractionum".
Hubbard's paintings are seldom titled and, with the exception of one canvas, "The Harbor at Greenport," which won a prize in 1924, none can be confidently dated.
Bob is confidently expecting them to say no.
But no one is confidently predicting that.
The earliest date that can be confidently assigned to Inca dynastic history is 1438, when Pachacuti Inca Yupanqui, a son of Viracocha Inca, usurped the throne from his brother Inca Urcon.
Although packaging of the dates reveals the country of production, the genetic origin of these date palm fruit cannot be confidently pinpointed to a country.
This calibration point was informed by the fossil record, which is relatively sparse for balaenids; the oldest fossil that can be confidently assigned to either the Balaena or Eubalaena lineage dates from the Pliocene (5.2 to 2.6 Myr BP).
Many historic eruptions over the past 2,000 years are confidently tied to core data, and others can be approximately tied to other historically or geologically dated eruptions.
