The earliest extant Upanishads date roughly from the middle of the 1st millennium bce.
Two of its five extant pyramids date from the 4th dynasty (c. 2575 c. 2465 bce) and were built by King Snefru (reigned 2575 51).
In addition, almost 50 measurements of eclipse times by medieval Arab astronomers are extant; these date from between about 800 and 1000 ce and are mainly contained in the Hakemite Tables compiled by Ibn Yūnus about 1005.
Pāli poems, with their new metres (often based on a musical phrase), stylistic features, figures of speech, and choice diction, foreshadow classical kāvya literature in Sanskrit, whose extant specimens date from a later period.
In his brief career (all his extant paintings date from the last five years of his life) this highly inventive young artist taught his contemporaries and successors how to exploit the medium of oil paint to create the illusion of textures, light, and air in their paintings.
That said, in the 12th century Henry II undertook a project of rebuilding the castle and much of the extant remains date from this period.
The earliest African fossil faunas of fully modern aspect (i.e. with species confidently assigned to extant genera) date to the interval 7 5 Mya [ 73, 75- 77, 92- 95].
The extant Fort Moultrie dates from 1809.
The extant fortress, dating from the 17th century, was part of a nationwide system of defenses.
Most of the extant texts, dating from about 747 bce to 75 ce, are in the British Museum.
