Of the work of Cyriac of Ancona, written about 1450, only some fragments remain, which are well supplemented by the contemporaneous description of the capable observer known as the " Anonymus of Milan."
Contemporaneous with these were various schemes of classification which were based, not on a consideration of the entire structure of each animal, but on the variations of a single organ, or on the really non-significant fact of the structure of the egg.
In that case the later rulers of the Dynasty of Isin would have been contemporaneous with the earlier rulers of Dynasty I.
On the other hand, the impartial historical student cannot compare the Thirty-nine Articles with the contemporaneous canons and decrees of the council of Trent without being impressed by striking contrasts between the two sets of dogmas.
But inscriptions recently discovered, by showing that the second dynasty was partly contemporaneous with the first and the third, have proved that these dates are too high: see L.