Paleoendemic

Paleoendemic

 

an endemic species or genus of plants or animals that is characteristic of a single country or region. A paleoendemic is often native to the region and has existed for a long time. Such a plant or animal often is unrelated to other representatives of the surrounding flora or fauna. Examples of paleoendemics are the gymnosperm gingko (preserved only in eastern Asia) and the desman. The gingko is the only extant representative of a formerly extensive group of plants. The desman, which inhabits the Volga and Don basins, was widely distributed in the Tertiary. (SeeNEO-ENDEMICS.)

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Museomics illuminate the history of an extinct, paleoendemic plant lineage (Hesperelaea, Olcaceae) known from an 1875 collection from Guadalupe Island, Mexico.
2012: Cranial divergence among evolutionary lineages of Martino's vole, Dinaromys bogdanovi, a rare Balkan paleoendemic rodent.
mexicana as the dominant element are considered a relict and paleoendemic vegetation established in areas that presumably served as Pleistocene refuges of flora and fauna in Mexico (Rzedowski 1991).
The temperate rainforests contain many paleoendemic species.
Developmental failure and loss of reproductive capacity in the rare paleoendemic shrub Dedeckera eurekensis.
A paleoendemic is an ancient relict with no apparent closely related extant taxon (Table X; Keener, 1983).
In some places the presence of paleoendemics is notorious (Soto et al.
This suggests that these two genera are paleoendemics.
Nevertheless, the blind species in the family linyphiid, Centromerus bulgarianus (Drensky 1931), Troglohyphantes drenskii Deltshev 1973 and Troglohyphates bureschianus Deltshev 1975, all species with primitive three branched paracymbia, also can be regarded as probable paleoendemics (Deltshev 1996).
The speciation due to isolation gives rise to nioendics which superimpose themselves on these paleoendemics or relics of previously more extensive faunas, giving rise to a series of faunistic groupings which are basic to our understanding the history of the changes in the outside environment.
This is probably the case in the more marginal of the section Polium species, such as those of subsection Rotundifolia (Sauvage & Vindt, 1955) or of subsection Simplicipiliosa (Puech, 1976), especially those, such as chasmophyte paleoendemics (Puech, 1976; Crespo et al.
Species-based projects: These would identify species of special and immediate concern-- for example, paleoendemics and anthropogenic endemics that have restricted and shrinking distributions, respectively.