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A living fossil is a deprecated term for an extant taxon that phenotypically resembles related species known only from the fossil record. To be considered a living fossil, the fossil species must be old relative to the time of origin of the extant clade. Living fossils commonly are of species-poor lineages, but they need not be.
The coelacanth was long considered a "living fossil" because scientists thought it was the sole remaining member of a taxon otherwise known only from fossils, with no close relations alive, [8] and that it evolved into roughly its current form approximately 400 million years ago. [1]
The chimpanzee–human divergence likely took place during around 10 to 7 million years ago. [1] The list of fossils begins with Graecopithecus, dated some 7.2 million years ago, which may or may not still be ancestral to both the human and the chimpanzee lineage.
New research shows that Homo sapiens traveled from Africa to East Asia and toward Australia up to 86,000 years ago.
(The "living fossil" coelacanth is a related lobe-finned fish without these shallow-water adaptations.) Tetrapod fishes used their fins as paddles in shallow-water habitats choked with plants and detritus. The universal tetrapod characteristics of front limbs that bend backward at the elbow and hind limbs that bend forward at the knee can ...
The structures are considered to be one of the oldest ecosystems on Earth, according to NASA, representing the earliest fossil evidence for life on our planet from at least 3½ billion years ago.
Earliest ostriches, trees representative of most major groups of oaks have appeared by now. [102] 20 Ma First giraffes, hyenas, and giant anteaters, increase in bird diversity. 17 Ma First birds of the genus Corvus (crows). 15 Ma Genus Mammut appears in the fossil record, first bovids and kangaroos, diversity in Australian megafauna. 10 Ma
The explosive discovery of a tiny, enigmatic hominin in an Indonesian cave in 2003 captivated the world. Now, 20 years later, scientists are still struggling to understand the hobbit’s place in ...