Related topics: climate change · extinction · plants · biodiversity · plos one

Fossil discovery deepens snakefly mystery

Fossil discoveries often help answer long-standing questions about how our modern world came to be. However, sometimes they only deepen the mystery—as a recent discovery of four new species of ancient insects in British ...

New fossil seal species rewrites history

The discovery, published today in the Proceedings of the Royal Society B, radically changes scientists' understanding of how seal species evolved around the world.

Animals laugh too, analysis of vocalization data suggests

Human laughter is common, but it's a somewhat mysterious part of our evolution. It's clear to evolutionary scholars that we laugh as a part of play, signaling our cooperation or friendliness. But how did laughter evolve? ...

page 1 from 40

Species

In biology, a species is:

There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used.

This text uses material from Wikipedia, licensed under CC BY-SA