Logo IMG
HOME > My Amsci > Restricted Access

Restricted Access The content you've requested is available without charge only to active Sigma Xi members and American Scientist subscribers.

If you are an active member or an individual subscriber, please log in now in order to access this article.

If you are not a member or individual subscriber, you can:


Figure 2. LanceletsClick to Enlarge Image

Generations of zoology students have studied the lancelet—also known as amphioxus—because of the clues it may hold about the evolutionary history of the vertebrates. Resembling a little, colorless anchovy fillet, the lancelet is believed to bear an uncanny likeness to the invertebrate ancestor of the vertebrates. As unflattering as this may sound to a vertebrate wearing an Armani jacket, our authors provide further support for this theory on the basis of recent studies on the lancelet's molecular biology and embryonic development.

Connect With Us:


Subscribe to Free eNewsletters!

Read Past Issues on JSTOR

JSTOR, the online academic archive, contains complete back issues of American Scientist from 1913 (known then as the Sigma Xi Quarterly) through 2005.

The table of contents for each issue is freely available to all users; those with institutional access can read each complete issue.

View the full collection here.

RSS Feed Subscription

Receive notification when new content is posted from the entire website, or choose from the customized feeds available.

Write for American Scientist

Review our submission guidelines.

Subscribe to American Scientist