Lazarus taxa, refugia and relict faunas: evidence from graptolites

@article{Rickards2002LazarusTR,
  title={Lazarus taxa, refugia and relict faunas: evidence from graptolites},
  author={Richard Barrie Rickards and Anthony J. Wright},
  journal={Journal of the Geological Society},
  year={2002},
  volume={159},
  pages={1 - 4}
}
Lazarus taxa are considered to be end members of a common phenomenon and their usefulness is questioned. Mass extinctions are survived by a small number of evolutionary lineages, which give rise to the increase in biodiversity during the recovery phase; and by a small number of species which survived in geographically small, isolated refugia, perhaps marginal to the main environment in crisis. Refugia may give rise to relict faunas, as in the case of early Ludlow graptolites of New South Wales… Expand

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References

SHOWING 1-10 OF 30 REFERENCES
Biotic crises in the history of Upper Silurian graptoloids: A Palaeobiological model
TLDR
A model of recovery proposed here implies two alternatives: some of the relic species exhibit great abundance frequently associated with a subnormal phenotype (the post‐event syndrome) and the ensuing rediversification involves indigenous speciation or as a result of the lack of evolutionary response on the part of the local survivors, vacant habitats are filled by immigrants. Expand
Lazarus taxa and fossil abundance at times of biotic crisis
Mass extinctions are often followed by intervals in which taxa disappear from the fossil record only to reappear again later. This ‘Lazarus effect’ is often attributed to a poor-quality fossil recordExpand
Gisbornian (Caradoc) graptolites from New South Wales, Australia: systematics, biostratigraphy and evolution
The biodiversity record of graptolites from the Cheeseman's Creek Formation, considered herein as late Gisbornian (Caradoc) in age, has been substantially increased to fifteen taxa, including the newExpand
Mass Extinctions and Their Aftermath
TLDR
In this text the demise of the dinosaurs is put into the proper context of other extinction events and all proposed extinction mechanisms - climate change, meteorite impact, volcanisms - are critically assessed. Expand
Oligophyly and evolutionary parallelism: A case study of Silurian graptolites
Oligophyly may be defined as a restrictive factor in evolution leading to minimization of the number of phyletic lines owing to an occasional reduction by means of mass extinction as well as to theirExpand
The Vicissitudes of the Gastropods During the Interval of Guadalupian-Ladinian Time
Abstract There were two periods of adaptive radiation of gastropods in the Upper Paleozoic, the latest culminating in the Guadalupian. The last of the well-balanced, diverse marine faunas of theExpand
Evolution of the Ludlow (Silurian) graptolite genus Bohemograptus Přibyl 1936
SUMMARY The characteristic and long-ranging Ludlow graptoloid Bohemograptus Přibyl, 1967 is considered to have originated from Lobograptus progenitor cudalensis through B. urbaneki or MonograptusExpand
Range, proportionate representation, and demise of brachiopod families through Permian Period
The time range and proportional distributions of Permian brachiopod families are summarized for the Permian Period. The ‘imperfection’ of the record is calculated from the apparent absences ofExpand
Background and Mass Extinctions: The Alternation of Macroevolutionary Regimes
Comparison of evolutionary patterns among Late Cretaceous marine bivalves and gastropods during times of normal, background levels of extinction and during the end-Cretaceous mass extinctionExpand
Biotic Recovery from Mass Extinction Events
Containing papers by leading authorities on several of the major extinction events of the geological record, the volume brings together new data on a wide range of floral and faunal groups. SeveralExpand
...
1
2
3
...