- Relict
The term relict is used to refer to surviving remnants of natural phenomena. Compare
relic which is used to refer to human artifacts or remains.
* Inbiology a relict is an organism that at an earlier time was abundant in a large area but now occurs at only one or a few small areas. The distribution of a relict is characterized as endemic. Thetuatara is an example of a relict. It now lives only on a few small islands off New Zealand. The term "relict" can also refer to an ancient species that survives while related species go extinct. Thehorseshoe crab is an example of this type of relict. Horseshoe crabs are most closely related to theeurypterid s, which disappeared in thePermian-Triassic extinction event .
* Inecology , anecosystem which originally ranged over a large expanse, but is now narrowly confined, may be termed a "relict".
* Ingeology , the term "relict" refers to structures or minerals from a parent rock that did not undergo metamorphosis when the surrounding rock did, or to rock that survived a destructive geologic process. For example, the wavy patterns often seen inmarble are relicts of layering in the originallimestone .
* InHistorical linguistics , a "relict" is a word that is a survival of a form or forms that are otherwise archaic.
* A relict was also an ancient term for awidow , but has come to be a generic or collective term for widows and widowers.ee also
*
relic
*living fossil
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