The phrase "a pivotal evolution" is correct and usable in written English.
It can be used to describe a significant change or development that plays a crucial role in a particular context or field.
Example: "The introduction of renewable energy sources marked a pivotal evolution in the fight against climate change."
Alternatives: "a crucial development" or "a significant transformation".
In the hope of reconstructing a pivotal step in evolution — the colonization of land by fish that learned to walk and breathe air — researchers have decoded the genome of the coelacanth, a prehistoric-looking fish whose form closely resembles those seen in the fossils of 400 million years ago.
This we argue is a fundamentally important property of the epigenetic regulatory system that in germ cells plays a pivotal role in evolution and in somatic cells in carcinogenesis.
Compelling evidence suggests that changes in cis-regulatory sequences and transcriptional regulation in general play a pivotal role in evolution [ 37, 40].
The genesis of the eukaryotes was a pivotal event in evolution and was accompanied by the acquisition of numerous new cellular features including compartmentalization by cytoplasmic organelles, mitosis and meiosis, and ciliary motility.
See research article http://www.biomedcentral.com/1471-2164/11/366 Thevolutionof of plastids - the light-gathering organelles of eukaryotic algae and plants - was a pivotal event in eukaryotic evolution.
At a pivotal period in prehuman evolution, the discoverers concluded, two lines of hominins practiced contrasting locomotion behavior.
At a pivotal time in human evolution, around 2.4 million years ago, a muscle gene underwent a disabling alteration, new research has found.
Meanwhile, two groups of anthropologists, working independently, have theorized that cooked tubers, corms, rhizomes and other roots played a pivotal role in human evolution.
A pivotal figure in the evolution of electronic music, Stockhausen rejected traditional forms and refused commissions for concertos, symphonies and string quartets.
"It couldn't have been easy but they did and, after that, obviously the story changed and Africa became a pivotal centre for anthropoid evolution," said Beard.
