Late tomorrow we look forward to bringing you a Big Project Announcement (well, more of a Big Project Promotion). So, tune in then for more details.
In the meantime, enjoy this new plot of our data. The other day Tor Bertin suggested we take a look at MT III and MC III ratios. So, here’s a chart showing the MT III:tibia ratio versus the MC III: ulna ratio. A few things to note:
- Hadrosaurs are still very, very bizarre. Their MC IIIs are relatively longer than in any other ornithischian.
- The vertical spread in ceratopsians is probably because both small, bipedal forms as well as large, quadrupedal forms are included in that category.
- Basal ornithischians have very long MT IIIs. Is this a consequence of their generally small size?
- We need more thyreophorans (stegosaurs, ankylosaurs, and the like) with MC and MT data! This group, for various reasons, is one of the remaining holes in the data set.
In the interests of full transparency, I deleted the point for for the ornithopod Lurdusaurus arenatus. Its metatarsal III length seems far too small for the size of the tibia. This may be an error in the original paper (I even went back to triple-check it!), or it could be that this taxon has tibia:metatarsal proportions completely unlike any other ornithopod.
Want to See Some Other Plots?
We’re always looking for new ways to present the data on the blog. If you have any requests, feel free to note them in the comments section.
Or better yet. . .don’t forget that the data are freely available to everyone! There is absolutely nothing stopping you from playing with the data yourself. In fact, we encourage it. Odds are quite good that, like many project participants, you’ll pick up something nobody else has noticed yet.