Why Did T. Rex Have Such Tiny Arms? A New Study Has a Theory - NBC Palm Springs
nbcpalmsprings.com
A new study suggests T. Rex's famously puny arms are evolution's trade-off — the price paid for one of the most powerful skulls in predator history.
Evolutionary Trade-Off TheoryResource Allocation TheoryNatural SelectionCostly Signaling Theory
Theory Briefing
- T. Rex's massive, bone-crushing skull may have evolved at the direct expense of its upper body musculature, researchers say.
- The study applies evolutionary trade-off theory, arguing finite biological resources forced the dinosaur to 'choose' jaws over arms.
- This constraint-based model reframes T. Rex's tiny arms not as a quirk but as an adaptive cost of becoming the ultimate apex predator.