New mammal data challenge evolutionary pulse theory

Article Abstract:

Researchers at the North American Paleontological Convention are skeptical about the research results of Elisabeth Vrba, who claims that climate change had a dramatic effect on evolution. African fossil records indicate that an evolutionary shift occurred over a period of at least a million years.

Physiological aspects, Climatic changes, Climate change, Vrba, Elisabeth

---

Animal oddballs brought into the ancestral fold?

Article Abstract:

Geologist John Grotzinger and geochronologist Samuel Bowring and their colleagues present evidence indicating that the Ediacara did not die off until at least the beginning on the Cambrian. The evidence suggests that the Ediacara may have contributed to animal evolution.

Paleontology, Precambrian Era

---

Timing evolution's early bursts

Article Abstract:

A new examination of the fossil record of algae indicates that the species experienced a spurt of evolutionary growth even earlier than the Cambrian explosion of 500 million years ago. A genetic innovation may be the reason for the evolutionary surge.

Algae, Fossil, Fossil algae

Similar abstracts:

• Abstracts: Revised Galileo data leave Jupiter mysteriously dry. Galileo suggests deep roots to Jupiter's fierce winds. Jupiter bombardment now certain, but how big a show?
• Abstracts: Coalition challenges public officials to always consider toll roads. D.C. Airport Authority wants to run toll road, build rail
• Abstracts: Threats of war, chances for peace. Crisis in the drylands. Welfare states, beyond ideology
• Abstracts: Renovation restores Gettysburg Railroad Station. Commuter rail rolls into northern Utah
• Abstracts: Singapore's observation wheel tops London Eye. Historic buildings: renovation expands, transforms Virginia Capitol

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.