Experts disagree over whether these represent an evolutionary continuum, with the less specialised shastosaurs a paraphyly grade that was evolving into the more advanced forms (Maisch and Matzke 2000), or whether the two were separate clades that evolved from a common ancestor earlier on (Nicholls and Manabe 2001).

In short, obedience to certain rules, being good and being punished for being bad, have a place in the evolutionary continuum linking humans and other animals.

As the Pleistocene and current Black Vultures form an evolutionary continuum rather than splitting into two or more lineages, some include the Pleistocene taxa in C. atratus.

Behind the free associations is an acute observer of love, death and the entire evolutionary continuum.

One thing that both Henry Sapoznik and Seth Rogovoy show in their very different but complementary studies is that the music now considered authentic, "pure" klezmer is just a point on an evolutionary continuum.

Behind the whimsy is an acute observer of love, death and the entire evolutionary continuum from plants to bugs to humans.

Others argue that an evolutionary continuum exists between the communication methods these animals use and human language.

The best way to assess where gliders fit on the evolutionary continuum between land- and air-dwelling insects, he added, would be to study the characteristics that allow silverfish to glide and compare them to those of the earliest known flying insects.

One outcome of this insight, which Integral thinkers have codified and mapped, is that there are hierarchical stages of development along a deep-time evolutionary continuum, and that the interdependence between interior and exterior development directly manifests itself in human consciousness and culture: from egocentric to ethnocentric to worldcentric to kosmocentric.

For many biologists, who see an unbroken evolutionary continuum from the first single-cell organisms to people, an artificially made microbe would be a giant step toward understanding the nature of life.