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The thing is that they seem to have been quite strong, and didn't really diminish further over time (insofar the fossils we have can tell us), which doesn't rea
by Beltalowda 4y ago
The thing is that they seem to have been quite strong, and didn't really diminish further over time (insofar the fossils we have can tell us), which doesn't really fit with being purely vestigial.
- rhdunn 4y agoI wonder if the strength was to help pin down struggling prey. The small arms would then be designed for aerodynamics -- to not slow the T. rex down when running toward its prey -- but also help out when capturing it. That would prevent them diminishing further over time and find that optimal length for both competing requirements.