Science Memes

11047 readers

2805 users here now

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

Rules

Don't throw mud. Behave like an intellectual and remember the human.
Keep it rooted (on topic).
No spam.
Infographics welcome, get schooled.

This is a science community. We use the Dawkins definition of meme.

Research Committee

[email protected]

Other Mander Communities

Science and Research

Biology and Life Sciences

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

founded 2 years ago

MODERATORS

[email protected]

428

Comparative anatomy (slrpnk.net)

submitted 1 month ago by [email protected] to c/[email protected]

61 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 4 points 1 month ago (1 children)

Mass per volume is density, and I suspect the Trex and kangaroo are similar (~1000 kg/m^3) so yes they'd both bounce in that case. I think what you're looking for is surface area to volume, which decreases rapidly as an object gets larger while maintaining geometry.

[–] [email protected] 4 points 1 month ago

It's worth noting that most extinct dinosaurs were probably more similar to surviving ones (i.e., birds) than to mammals and reptiles when it comes to bones and respiratory systems, and, by extension, density.

That is to say, they probably could get that big because they were quite literally full of air.
Some of them (especially sauropods, but maybe also other big species like tyrannosaurs) probably had even more complex and efficient air sac systems than modern birds...