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Known as Omo Kibish 1 (Omo I), the fossil was dated to 196 ± 5 ka old and is among two other Omo remains (Omo II and Omo III) that were found in Member I. [3] The Omo fossils were more recently (in 2022) re-dated to approximately 233 ± 22 ka old. [4] In the early 2000s a research boom enriched the knowledge base about the Kibish Formation.
A relict, in geology, is a structure or mineral from a parent rock that did not undergo metamorphic change when the surrounding rock did, or a rock that survived a destructive geologic process. Some geologic processes are destructive or transformative of structures or minerals, and when a process is not complete or does not completely destroy ...
Plant macrofossils include leaf, needle, cone, and stem debris; and can be used to identify types of plants formerly growing in the area. Such botanical macrofossil data provide a valuable complement to pollen and faunal data that can be used to reconstruct the prehistoric terrestrial environment.
Tree remains that have undergone petrifaction, as seen in Petrified Forest National Park. In geology, petrification (from Ancient Greek πέτρα (pétra) 'rock, stone') is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.
Image Location of discovery Date of discovery Age of remains in radiocarbon years BP Comments Adams mammoth: Mouth of the Lena River, Siberia [1] 1799 [1] [2] 35,800 [1] [3] It is the first complete mammoth skeleton ever to be reconstructed. Originally, it was an entire mummified mammoth carcass. [2] Beresovka Mammoth Berezovka River, Siberia ...
Small shelly fossils are composed of a variety of minerals, the most important being silica, calcium phosphate and calcium carbonate. [3] The minerals used by each organism are influenced by the chemistry of the oceans the organism first evolved in, but then continue to be used even if the ocean chemistry changes.
The fossil has been identified as a new silesaurid, an extinct group of reptiles. Paleontologists debate whether silesaurids were true dinosaurs or possibly a precursor to the creatures that once ...
Sometimes, fossils contain only carbon. Fossils usually form when sediment buries a dead organism. As sediment piles up, the organism's remains are subjected to pressure and heat. These conditions force gases and liquids from the body. A thin film of carbon residue is left, forming a silhouette of the original organism called a carbon film. [1]