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  2. Silurian hypothesis - Wikipedia

    en.wikipedia.org/wiki/Silurian_hypothesis

    Instead, researchers might find indirect evidence, such as climate changes, anomalies in sediment, or traces of nuclear waste. The hypothesis also speculates that artifacts from past civilizations could be found on the Moon and Mars, where erosion and tectonic activity are less likely to erase evidence. The concept of pre-human civilizations ...

  3. Trace fossil - Wikipedia

    en.wikipedia.org/wiki/Trace_fossil

    The trackway Protichnites from the Cambrian, Blackberry Hill, central Wisconsin. A trace fossil, also known as an ichnofossil (/ ˈ ɪ k n oʊ f ɒ s ɪ l /; from Greek: ἴχνος ikhnos "trace, track"), is a fossil record of biological activity by lifeforms but not the preserved remains of the organism itself. [1]

  4. The Greatest Show on Earth: The Evidence for Evolution

    en.wikipedia.org/wiki/The_Greatest_Show_on_Earth:...

    Guppy (Poecilia reticulata) – example of evolution observed; Domesticated silver fox; Evidence of common descent; Wendy Wright (activist) Endless Forms Most Beautiful – "The Greatest Show on Earth" song in the album contains quotes from the book read personally by Richard Dawkins himself.

  5. Evidence of common descent - Wikipedia

    en.wikipedia.org/wiki/Evidence_of_common_descent

    The history of the camel provides an example of how fossil evidence can be used to reconstruct migration and subsequent evolution. The fossil record indicates that the evolution of camelids started in North America (see figure 4e), from which, six million years ago, they migrated across the Bering Strait into Asia and then to Africa, and 3.5 ...

  6. Evolution as fact and theory - Wikipedia

    en.wikipedia.org/wiki/Evolution_as_fact_and_theory

    Professor of biology Jerry Coyne sums up biological evolution succinctly: [3]. Life on Earth evolved gradually beginning with one primitive species – perhaps a self-replicating molecule – that lived more than 3.5 billion years ago; it then branched out over time, throwing off many new and diverse species; and the mechanism for most (but not all) of evolutionary change is natural selection.

  7. History of evolutionary thought - Wikipedia

    en.wikipedia.org/wiki/History_of_evolutionary...

    This included evidence that birds had evolved from reptiles, including the discovery of Archaeopteryx in Europe, and a number of fossils of primitive birds with teeth found in North America. Another important line of evidence was the finding of fossils that helped trace the evolution of the horse from its small five-toed ancestors. [101]

  8. Cooperation (evolution) - Wikipedia

    en.wikipedia.org/wiki/Cooperation_(evolution)

    In evolution, cooperation is the process where groups of organisms work or act together for common or mutual benefits. It is commonly defined as any adaptation that has evolved, at least in part, to increase the reproductive success of the actor's social partners. [1]

  9. Introduction to evolution - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_evolution

    Evolution does not strive for more advanced, more intelligent, or more sophisticated life forms. [25] For example, fleas (wingless parasites) are descended from a winged, ancestral scorpionfly, and snakes are lizards that no longer require limbs—although pythons still grow tiny structures that are the remains of their ancestor's hind legs.