Being Giant: Why are mammals not as big as dinosaurs?

Speaker Series 2015: “Being Giant: Why are mammals not as big as dinosaurs?”

The Royal Tyrrell Museum was pleased to present the return of its popular annual Speaker Series on January 8, 2015 with a presentation by Dr. Jessica Theodor, Associate Professor in the Department of Biological Sciences at the University of Calgary, entitled “Being Giant: Why are mammals not as big as dinosaurs?”

Dinosaurs are well-known for reaching gigantic body sizes; some species hold the title for being the largest land-dwelling animals to have ever existed. In contrast, mammals show a very different pattern from dinosaurs—even the largest land-dwelling mammals are much smaller than dinosaurs—while some whales can be much bigger. In her presentation, Dr. Theodor discusses how different environments control the maximum size attainable by mammals and suggests that the constraints on maximum size for marine mammals differ greatly from those of both terrestrial mammals and dinosaurs.

 

The Royal Tyrrell Museum’s Speaker Series talks are free and held every Thursday from January to April 2015 at 11:00 a.m. in the Museum auditorium. Please visit the website for more information about upcoming speakers.

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