Scientoon based on research about the population of Tyrannosaurus rexes. Research is published in Science journal. 
Link to Publication: Absolute abundance and preservation rate of Tyrannosaurus rex
Creative common liscence
Science Cartoon by Vishal K. Muliya is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Based on a work at https://vkmuliya.blogspot.com.
