How do you draw an extinct animal?

Answers to your questions about the news.
Dec. 7 2006 9:31 AM

How To Draw an Extinct Animal

Work from the inside out.

Download the MP3 audio version of this story here, or sign up for The Explainer's free daily podcast on iTunes.

The Dunkleosteus terrelli. Click image to expand.
Dunkleosteus terrelli

The prehistoric sea creature Dunkleosteus terrelli had the strongest jaws ever for a fish, according to a recent study. Artists' renderings of the animal show an iron-jawed leviathan, sometimes with a nasty underbite. How do you draw an extinct animal?

Start with the skeleton. The only definite indicator of an ancient animal's size and shape comes from the fossil record. In the case of Dunkleosteus, which went extinct 360 million years ago, the only fossilized remains are its head, jaw, and the armor that extends part of the way down its back. The rest of the fish's body was cartilaginous like a shark's, and therefore didn't preserve. By looking at the skeletal remnants with an expert, an artist can usually determine how the bones articulate, or fit together, and what movement that configuration allows for. Knowledge about the animal's structure and mobility helps the artist choose its position and activity in the picture.

Advertisement

Where the skeleton ends, speculation begins. Sometimes it helps to refer to modern descendants. Some artists give the Dunkleosteus a sharklike dorsal fin, for example, even though no one knows for sure whether it had fins at all. Dinosaur artists who use vivid palettes often cite colorful birds and iguanas to support their choices. Ancient relatives are a good guide, too. We know that Dunkleosteus was in a class of armored fish called the placoderms. Other members of the class were more fully preserved, and the proportions of their fossils suggest that the Dunkleosteus was about 25 to 33 feet long. More superficial features—like the texture and color of the skin—are subject to artistic license.

Paleontologists use illustrations of extinct animals for scientific publications, museum exhibits, and popular books. Most natural history museums have in-house artists available for this work, but if they need something very specific—a particular artistic style, say, or a specialized animal—they may hire an outside firm. In general, the work proceeds in an extended, and sometimes excruciating, back-and-forth, in which the artist sketches ideas and the scientists recommend tweaks. This process can take anywhere from a few days to several months, depending on the speed of the artist and whether the research team is describing an animal that's never been drawn before.

Got a question about today's news? Ask the Explainer.

The Explainer thanks Gretchen Baker and Mark Westneat of the Field Museum in Chicago and Philip Anderson of the University of Chicago.

Christopher Beam is a writer living in Beijing.

TODAY IN SLATE

Politics

Blacks Don’t Have a Corporal Punishment Problem

Americans do. But when blacks exhibit the same behaviors as others, it becomes part of a greater black pathology. 

I Bought the Huge iPhone. I’m Already Thinking of Returning It.

Scotland Is Just the Beginning. Expect More Political Earthquakes in Europe.

Lifetime Didn’t Think the Steubenville Rape Case Was Dramatic Enough

So they added a little self-immolation.

Two Damn Good, Very Different Movies About Soldiers Returning From War

Medical Examiner

The Most Terrifying Thing About Ebola 

The disease threatens humanity by preying on humanity.

Students Aren’t Going to College Football Games as Much Anymore, and Schools Are Getting Worried

The Good Wife Is Cynical, Thrilling, and Grown-Up. It’s Also TV’s Best Drama.

  News & Politics
Weigel
Sept. 19 2014 9:15 PM Chris Christie, Better Than Ever
  Business
Business Insider
Sept. 20 2014 6:30 AM The Man Making Bill Gates Richer
  Life
Quora
Sept. 20 2014 7:27 AM How Do Plants Grow Aboard the International Space Station?
  Double X
The XX Factor
Sept. 19 2014 4:58 PM Steubenville Gets the Lifetime Treatment (And a Cheerleader Erupts Into Flames)
  Slate Plus
Slate Picks
Sept. 19 2014 12:00 PM What Happened at Slate This Week? The Slatest editor tells us to read well-informed skepticism, media criticism, and more.
  Arts
Brow Beat
Sept. 19 2014 4:48 PM You Should Be Listening to Sbtrkt
  Technology
Future Tense
Sept. 19 2014 6:31 PM The One Big Problem With the Enormous New iPhone
  Health & Science
Bad Astronomy
Sept. 20 2014 7:00 AM The Shaggy Sun
  Sports
Sports Nut
Sept. 18 2014 11:42 AM Grandmaster Clash One of the most amazing feats in chess history just happened, and no one noticed.