Visitors Now:
Total Visits:
Total Stories:
Profile image
By Sauropod Vertebra Picture of the Week
Contributor profile | More stories
Story Views

Now:
Last Hour:
Last 24 Hours:
Total:

Rabbit skulls strike back: Kraatz and Sherratt (2016)

Tuesday, October 11, 2016 16:43
% of readers think this story is Fact. Add your two cents.

(Before It's News)

rabbit-facial-tilt-and-locomotion-kraatz-sherratt-2016-fig5

Facial tilt in extant leporids is strongly correlated with locomotor mode – fast movers have more strongly tilted faces. There’s a lot of homoplasy, which is to be expected with characters that are strongly driven by current function. Kraatz and Sherratt (2016: fig. 5).

Judgmental readers will recall that I have dabbled in mammal skulls, thanks to the corrupting influence of my friend and colleague, Brian Kraatz. At the end of my last post on this sordid topic, I mentioned that Brian and Emma Sherratt were working on a version 2.0 based in 3D morphometrics. The first volley from that project was published today in PeerJ.

Happily for all of us, Brian and Em confirmed the relationship between facial tilt and locomotor mode that we first documented last year, using more taxa, more landmarks, and two more dimensions (Kraatz and Sherratt 2016: 12):

…in accordance with previous findings by Kraatz et al. (2015), facial tilt angle is correlated with locomotor mode (D-PGLS, F(2,17) = 11.13, P = 0.003), where lower facial tilt angle, meaning more pronounced cranial flexion, is found in cursorial species, and high angles are found in generalist species.

That’s just the most personally relevant tip of a very large, multifaceted iceberg, including a monster supplementary info package on FigShare with, among other things, 3D models of bunny skulls. It’s all free and awesome, so go have fun.

lagomorph-facial-tilt-evolution-kraatz-sherratt-2016-fig7

That homoplastic pattern shown in figure 5, above? It’s been going on for a while. I’m gonna go out on a limb and guess that Hypolagus was a rocket. Kraatz and Sherratt (2016: fig. 7).

References

Report abuse

Comments

Your Comments
Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

Top Stories
Recent Stories

Register

Newsletter

Email this story
Email this story

If you really want to ban this commenter, please write down the reason:

If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.