The term reletta species (or simply wreck) indicates a species that was present in a territory larger than the present and was confined to the latter as a result of events that have caused extinction elsewhere. >
Very often relict species are endemic in restricted areas or have a strongly fragmented area. Sometimes the wreck is a species limited to a narrow, similar to another geographically distant and distributed over a larger area.
Examples of migratory species are the alpine larch closely related to the larches that form very thick forests in Siberia and Canada; the zelkova siciliana and the zelkova cretese, the last European representatives of the genre Zelkova; the birch of Etna, arrived in Sicily from the north with glaciations; the false San Nicola Petagnaea cusson, the Juda tree Cercis siliquastrum. and also ginko biloba. Sometimes, the term "wreck" is also used as a synonym for "living fossil" to indicate species, genres or families that have survived the extinction of most similar organisms. Classify and modify wikitesto
Taxonomic Wagons: Species that were widespread at some time and are now regressive, such as Ginkgo Biloba.
Tertiary relics: Last species representing European flora before glaciations.
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