This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Sunday, 28 February 2021
Dinosaur Inbetweeners?
Katlin Schroeder (University of New Mexico) has carried out a study attempting to answer the question why smaller carnivorous dinosaurs (those weighing less than 60 kg) are so rare in many locations (https://www.theguardian.com/science/2021/feb/25/fossil-record-puzzle-teenage-t-rexes-dinosaur-study). Schroeder suggests, that 'teenaged' megatherapods (such as Tyrannosaurus rex), may have 'crowded' them out. She postulates that adolescent T. rex adopted a 'grow fast, die young' life-style. Schroeder studied fossil records of dinosaur communities across the globe. She noted that communities with megatherapods, were devoid of medium-sized (in the 100-1000kg range) carnivores. Communities without megatherapods had them.
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