The gang discusses two papers that use quantitative methods to investigate the biomechanical limitations of extinct organisms. The first paper models the range of jumping potential for a non-avian theropod dinosaur, and the other paper tests if an extinct bird could have skimmed the ocean for food. Meanwhile, James imagines a better future, Amanda is to blame, and Curt is heating up.

Up-Goer Five (Amanda Edition):

Today our friends look at two papers that talk about how things do stuff. The first paper looks at how a small one of large animals with thick skin and no hair would jump. It would jump very different than living animals with not thick skin with pieces that come off and have many parts. This is because they have long back parts that would get in the way and so they have to jump different. They could probably jump well, but just very different. The paper has very funny pictures that show this. The paper also has a computer do a pretend living animal with not thick skin with pieces that come off and have many parts, but they do not look at any living animals, just what the computer does.

The second paper looks at very big not living animal with not thick skin with pieces that come off and have many parts, that has not real teeth in its mouth and shows that it could not live like some living animals with not thick skin with pieces that come off and have many parts that have very long faces and the bottom part of their mouth is much longer than the top part. They go over water and use their mouth to eat things that live in water. But the not living animal with not thick skin with pieces that come off and have many parts was too big and too bad at flying to do this kind of living.

References:

Hellyer-Price, Olivia, Chris Venditti, and Stuart Humphries. "The largest extinct volant bird Pelagornis could not meet the energetic demands of skimming." Royal Society Open Science 13.2 (2026).

Charles, James P., Delyle T. Polet, and John R. Hutchinson. "Form–function relationships determining optimal jumping performance in an early bipedal dinosaur." Journal of The Royal Society Interface 23.235 (2026).