Lutz BachmannDec 13, 2022
Jo Wolfe
🦀Big #CRUSTMAS news!🦀
New preprint on a molecular #phylogeny of true #crabs. We find crabs moved to non-marine environments 5-15x over 100+ myr!
This culminates 20 years(!) of effort from an international team! 1/5
https://www.biorxiv.org/content/10.1101/2022.12.09.519815
Dec 12, 2022 at 5:19pmWeb
Show threadJo WolfeDec 12, 2022
We assembled new datasets describing the natural history of #terrestrialization (exciting for me because it included personal field observations - not easy when you usually study fossils). Left=marine, middle=direct path to land, right=path through freshwater. 2/5
Show threadJo WolfeDec 12, 2022
We inferred divergence times using several calibration methods and compared them with a chronospace thanks to @phyloprog. I was excited for FBD derived results, but it turns out these models don't always work well without a morphological matrix. 3/5
Show threadJo WolfeDec 12, 2022
We used threshold models to estimate the change in "grade" of terrestriality and found it is 10-100x harder to go from intertidal/estuarine to beach/riverbank/forest. Perhaps #crabs inform on the processes of #terrestrialization in early arthropods 400+ mya! 🌴🦀 4/5
Show threadJo WolfeDec 12, 2022

Thanks again to everyone involved in this massive project, especially @BrackenGrissom @lauren_ballou_ @JaviPaleobio @origamicrab! (sorry these are handles from the musk site)

The Dryad link in the preprint currently doesn't work, so if you are interested immediately, please look here: https://datadryad.org/stash/share/vn0i2P0xcsQ8gAK8EE-6rgo3WBkeSEqeqld_lx5zDLw 5/5

Dryad | Pre-publication sharing link

Show threadDr. Dan KillamDec 12, 2022
@jopabinia It seems our defenses are failing. They cannot be stopped. They keep evolving to fill more niches. It's their world. I for one welcome our new carcinized overlords
Show threadPer AhlbergDec 16, 2022
@jopabinia All Nature Aspires to a State of Crabness.
Show threadJo WolfeDec 16, 2022
@PerAhlberg so the memes say 🤣