Telltale Dino Heart Hints at Warm Blood | Science News



Support credible science journalism.

Subscribe to Science News today.


Telltale Dino Heart Hints at Warm Blood

12:20pm, October 2, 2002

He could tell just by looking that this dame had a heart of stone.

When PI (paleontological investigator) Michael (Mike) Hammer stumbled across the big-eyed dinosaur that he calls Willo on a South Dakota ranch in 1993, he noticed her chest cavity right away. Preserved in the curve of the dinosaur's ribs was a rock that Hammer was convinced was a heart.

The professional fossil collector, who runs Hammer and Hammer Paleotek in Jacksonville, Ore., took the dinosaur in for a medical X-ray scan. The scan confirmed that the beast had a heart with a structure that could finally help dinosaurs beat the rap as cold-blooded killers.

The fossil heart is built more like bird and mammal hearts than like the hearts of reptile

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from this issue of Science News

From the Nature Index Paid Content