Definition

Noun: 1. Large-scale evolutionary change: The process of evolution that occurs at or above the level of species, over very long (geological) periods of time, resulting in the formation of new taxonomic groups, such as genera, families, or orders. It focuses on major evolutionary trends and patterns.

Usage

The term "macroevolution" is used in evolutionary biology to discuss and analyze broad evolutionary patterns that are the cumulative result of many microevolutionary changes over vast timescales. It is often contrasted with "microevolution."

Examples

• The transition from aquatic life to terrestrial life in vertebrates is a classic example of macroevolution.
• Scientists study the fossil record to understand the patterns and processes of macroevolution.
• The macroevolution of flowering plants transformed many of Earth's ecosystems.

Advanced Usage

• Macroevolutionary patterns: Refers to the large-scale trends observed in the history of life, such as adaptive radiation, mass extinction, and increased biological complexity over time.
  • The study of macroevolutionary patterns helps us understand why some groups of organisms diversify while others decline.

Variants and Related Words

• Macroevolutionary (adjective): Pertaining to macroevolution.
  • The paleontologist proposed a new macroevolutionary hypothesis to explain the data.

Synonyms

• Speciation (on a large scale)
• Phylogenetic evolution
• Transspecific evolution

Antonyms

• Microevolution (evolutionary change within a species or population over shorter timescales)

Noun

1. evolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groups