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Iron columns had been used in Wren's designs for the House of Commons and were used in several early 18th-century churches in London, but these supported only galleries. In the second half of the 18th century the decreasing costs of iron production allowed the construction of major pieces of iron engineering.
The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence , mainly fossils .
The first eon in Earth's history, the Hadean, begins with Earth's formation and is followed by the Archean eon at 3.8 Ga. [2]: 145 The oldest rocks found on Earth date to about 4.0 Ga, and the oldest detrital zircon crystals in rocks to about 4.4 Ga, [34] [35] [36] soon after the formation of Earth's crust and Earth itself.
Since the chart combines secular history with biblical genealogy, it worked back from the time of Christ to peg their start at 4,004 B.C. Above the image of Adam and Eve are the words, "In the beginning God created the Heaven and the Earth" (Genesis 1:1) — beside which the author acknowledges that — "Moses assigns no date to this Creation.
Before Homo sapiens, Homo erectus had already spread throughout Africa and non-Arctic Eurasia by about one million years ago. The oldest known evidence for anatomically modern humans (as of 2017) are fossils found at Jebel Irhoud, Morocco, dated about 360,000 years old.
In eastern Jordan, post hole markings in the soil give evidence to houses made of poles and thatched brush around 20,000 years ago. [16] In areas where bone — especially mammoth bone — is a viable material, evidence of structures preserve much more easily, such as the mammoth-bone dwellings among the Mal'ta-Buret' culture 24–15,000 years ...
House Oldest preserved stone house in north west Europe. [16] [17] [18] Ġgantija: Malta: Europe: 3700 BCE Temple Two structures on the island of Gozo. The second was built four centuries after the oldest. [19] [20] Dolmen of Menga: Spain: Europe: 3700 BCE Tomb A megalithic burial mound called a tumulus, a long barrow form of dolmen: West ...
This clickable timeline template, wikilinked to over 30 Wikipedia articles, translated into over 25 languages, edited by over 40 editors, transcluded to over 120 articles, was originally derived from {{Life timeline}} for inclusion in the article "Timeline of human evolution".