macroevolution

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macroevolution

(măk′rō-ĕv′ə-lo͞o′shən, -ē′və-)
n.
Large-scale evolution occurring over a very long period time that results in the formation of new species and higher-level taxonomic groups.

mac′ro·ev′o·lu′tion·ar′y (-shə-nĕr′ē) adj.

macroevolution

A term of art for large-scale evolution of ecologically separated gene pools, which occurs at or above the level of speciation, resulting in relatively large and complex changes such as anagenesis and cladogenesis stasigenesis.

macroevolution

the collective processes by which new species arise and others become extinct.
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References in periodicals archive ?
2008: A macroevolutionary mosaic: episodic host-switching, geographical colonization and diversification in complex host-parasite systems.
On the other hand, Ayala (2005) agreed with the thesis that macroevolutionary principles are not reducible to microevolutionary approaches.
Macroevolutionary consequences of developmental mode in temnopleurid echinoids from the tertiary of Southern Australia.
A systems-analytical approach to macroevolutionary phenomena.
Macroevolutionary relationships of species of Drosophila melanogaster group based on mtDNA sequences.
Phyletic gradualism is a macroevolutionary hypothesis rooted in the notion of uniformitarianism (see below).
Increase in song frequency decreases spermatophore size: correlative evidence of a macroevolutionary trade-off in katydids (Orthoptera: Tettigoniidae).
This provides us with a way to estimate the age of human populations that is not necessarily linked to a macroevolutionary process.
A macroevolutionary mosaic: episodic host switching, geographic colonization and diversification in complex host-parasite systems.
Species represent the basic units in theories and mechanisms of macroevolutionary change.
It opens with an essay that examines the use of birth-death models in addressing a range of questions regarding macroevolutionary patterns.