"bilateria," as they're called - could possibly move in a fashion that would leave such trails.    From Wordnik.com.  [collision detection] Reference

Also, there's evidence of bilateria 40 million years before the Cambrian.    From Wordnik.com.  [Continuation…] Reference

As chordata is predated by bilateria, that would indicate that the evolutionary process is ongoing, not 'instantaneous'.    From Wordnik.com.  [Continuation…] Reference

Dolphins and whales were classified into the same group as cows and behemoths, even hierarchy of all bilateria is now quite different from what it used to be 20 years ago.    From Wordnik.com.  [On Thursday, the Legg report will be published along with...] Reference

It's worth noting that the ancestry of bilateria has always been a subject of much discussion and dispute, and the modern genetic analyses have thrown up some conflicting results.    From Wordnik.com.  [On Thursday, the Legg report will be published along with...] Reference

There is no reasonable scientific controversy concerning the common descent of humans and other bilateria, including segmented worms. mynym: Are organisms capable of intelligent selection?.    From Wordnik.com.  [Assessing Causality] Reference

Maybe bilateria weren't kicking around for millions of years later than we suspect.    From Wordnik.com.  [collision detection] Reference

Thus, biologists have argued that bilateria were around before the Cambrian explosion, which sort of primed the pump for that crazily rapid diversification of bilateria into all the major animal groups we have today.    From Wordnik.com.  [collision detection] Reference

Dolphins and whales were classified into the same group as cows and behemoths, even hierarchy of all bilateria is now quite different from what it used to be 20 years ago. ".    From Wordnik.com.  [On Thursday, the Legg report will be published along with...] Reference

3. The latest thinking seems to suggest that the shared developmental genes may have had something to do with specifying photoreceptive cell types, rather than fully-developed or even rudimentary visual apparatus in ur-bilateria.    From Wordnik.com.  [That's another fine mess you've made Jonathan! - The Panda's Thumb] Reference