Fanged kangaroos in Australia were thought to have gone extinct 15 million years ago, but new evidence suggests they were around for at least 5 million more years.
The ocean-dwelling siphonophore (Marrus orthocanna) is a colony of many individuals, each of which performs a specialized task, such as swimming, feeding, or reproduction.
June 18, 2014|
June 18, 2014
Is a colony of many individuals, each of which performs a specialized task "organized"?