Where Science and Faith Converge
TNRTB

Q&A: Were Dinosaurs Reptiles?

By Hugh Ross - March 5, 2015
More

From Jerry in Los Angeles, CA

I’m reading your book Navigating Genesis. On page 66 you say, “Given that dinosaurs were reptiles, not mammals…” Wait a minute! I thought it was shown decades ago that dinosaurs were not reptiles. They were warm-blooded and some were feathered. I thought it was common knowledge that dinosaurs were not reptiles. Am I wrong? 

 

Some scientists have speculated that a few of the dinosaur species were warm-blooded and that some dinosaurs were feathered. However, these claims are not yet scientifically validated. Scientists do know that dinosaurs were not mammals. Dinosaurs, like reptiles today, laid eggs. Mammals have placentas.

Scientists also know for certain that many of the dinosaur species could not have been warm-blooded. The sheer size of the larger land-dwelling dinosaurs rules out the possibility. Additionally, many dinosaurs had small mouths, which means they could not have consumed enough food to maintain blood temperatures significantly different from the ambient temperatures of their environments. Thus, they could not have been warm-blooded.

The problem with identifying dinosaurs as feathered creatures is that land-dwelling dinosaurs overlapped birds in the fossil record by more than 70 million years. In some cases the “feather evidence” is ambiguous. In other instances, it is not possible to determine whether the fossil find is a dinosaur or a flightless bird.

For more on whether or not dinosaurs were warm-blooded, check out “Were Dinosaurs Warm-Blooded?” (podcast). For more on whether or not dinosaurs had feathers, check out “Feathered Dinosaur or Flightless Bird?” (article).


Category
  • Dinosaurs
  • Dinosaurs and the Bible
Tags
  • Blogs

About Reasons to Believe

RTB's mission is to spread the Christian Gospel by demonstrating that sound reason and scientific research—including the very latest discoveries—consistently support, rather than erode, confidence in the truth of the Bible and faith in the personal, transcendent God revealed in both Scripture and nature. Learn More »

Support Reasons to Believe

Your support helps more people find Christ through sharing how the latest scientific discoveries affirm our faith in the God of the Bible.

Donate Now

U.S. Mailing Address
818 S. Oak Park Rd.
Covina, CA 91724
  • P (855) 732-7667
  • P (626) 335-1480
  • Fax (626) 852-0178
Reasons to Believe logo