National Geographic News: Cannibal Dinosaur

National Geographic News: Dinosaur Cannibal
<< Previous   4 of 4    
Physical evidence linking Majungatholus atopus to the tooth marks: A-B) Majungatholus atopus rib that exhibits multiple sets of denticle drag marks (both views are different regions of the same rib). The chisel-like shape and spacing of the denticles on Majungatholus teeth are comparable to the denticle patterns on modified bones. Teeth of Majungatholus occasionally exhibit damaged and/or worn denticles, which presumably reflects contact with bone. Scale bars are 5 millimeters (0.2 inches). C) The right dentary of Majungatholus atopus exemplifies the even pattern of tooth eruption (beneath bracket) required to generate the parallel sets of tooth marks documented on several bones in the sample. The intertooth spacing of Majungatholus is also consistent with the pattern of tooth marks.

Back to news story >>

Make a gift to support exploration and adventure >>

Get one year of National Geographic magazine! CLICK HERE for your FREE GIFT! >>
Photograph copyright Raymond Rogers, Macalester College
 
NEWS FEEDS    After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed. After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed.

Get our news delivered directly to your desktop—free.
How to Use XML or RSS




 

50 Drives of a Lifetime

Listen to your favorite National Geographic news daily, anytime, anywhere from your mobile phone. No wires or syncing. Download Stitcher free today.