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The Georgia Guidestones was a granite monument that stood in Elbert County, Georgia, United States, from 1980 to 2022. It was 19 feet 3 inches (5.87 m) tall and made from six granite slabs weighing a total of 237,746 pounds (107,840 kg). [1] The structure was sometimes referred to as an "American Stonehenge".
They are often called ammonites, which is most frequently used for members of the order Ammonitida, the only remaining group of ammonoids from the Jurassic up until their extinction. [ 2 ] Ammonoids exhibited considerable diversity over their evolutionary history, with over 10,000 species having been described. [ 3 ]
Ammon (/ ˈ æ m ən /; Ammonite: 𐤏𐤌𐤍 ʻAmān; Hebrew: עַמּוֹן ʻAmmōn; Arabic: عمّون, romanized: ʻAmmūn) was an ancient Semitic-speaking kingdom occupying the east of the Jordan River, between the torrent valleys of Arnon and Jabbok, in present-day Jordan.
Although almost all evidence indicated that ammonites did not survive past the K–Pg boundary, there is some scattered evidence that some ammonites lived for a short period of time during the Paleocene epoch, although none survived the Danian (66-61 Ma); [1] they were likely extinct within 500,000 years of the K-Pg extinction event, which ...
Goniatite shells are small to medium in size, almost always less than 15 centimeters (5.9 inches) in diameter and often smaller than 5 centimeters (2.0 inches) in diameter. The shell is always planispirally coiled, unlike those of Mesozoic ammonites in which some are trochoidal and even aberrant (called heteromorphs).
Foragers, known as "bummers", would provide food seized from local farms for the army while they destroyed the railroads and the manufacturing and agricultural infrastructure of Georgia. In planning for the march, Sherman used livestock and crop production data from the 1860 United States census to lead his troops through areas where he ...
The Hernando de Soto expedition encountered a settlement called Itaba between Coosa and Ulibahali, which was likely Etowah. [7] The historic Muscogee Creek formed in this region and occupied this area. They were later pushed out by the Cherokee, who migrated from eastern Georgia and Tennessee to evade European-American pressure.
Almost all ammonites, with the sole exemption of a few members of the family Psiloceratidae, including Psiloceras were wiped out at the Triassic–Jurassic extinction event (201.3 million years ago). [3] Most authors assume that Psiloceras descended from the Phyllocerataceae. P. spelae is probably the earliest species of Psiloceras. [5] [6]