You did read the article you referenced did you not jar. If you did you would know that no research is referenced after 1965. Chen made his statements in 1998 some 33 years later.
The point is that the newspaper article you quoted is obviously taking things out of content. It's not too unusual for writers to either make mistakes or misrepresent what the actual science is. The point, my friend, is that even 30 years before the news article we were beginning to find the very precursors Chen is talking about. Since then we have found many more including the main thing that Chen was concerned about, examples of bilateral life forms.
For example, in 2004 Chen, the very person mentioned in your news article published his discovery of small bilateral fossils from 40 to 55 Million
before the Cambrian.
Note that, just the very things the article said were needed have been found.
That is how science works.
There is no problem.
Now do you ever plan to post something related to the topic?
Anyone so limited that they can only spell a word one way is severely handicapped!