Visitors   Views   Downloads
NOT PEER-REVIEWED
"PeerJ Preprints" is a venue for early communication or feedback before peer review. Data may be preliminary.

Additional Information

Competing Interests

The authors declare that they have no competing interests. Vincent Fernandez is an employee of European Synchrotron Research Facility, Grenoble, France.

Author Contributions

Ricardo M Araujo conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Vincent Fernandez performed the experiments, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Michael J Polcyn reviewed drafts of the paper, developmental aspects in non-synapsids.

Jörg Fröbisch reviewed drafts of the paper.

Rui M.S. Martins performed the experiments, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

MorphoBank Project 2503

(http://www.morphobank.org/index.php/MyProjects/List/select/project_id/2503)

Funding

This work was supported by Portuguese national funds through FCT – Fundação para a Ciência e a Tecnologia within the framework of the project EXPL/BIA-EVF/0665/2013 (PALEOTECH) and by the European Synchrotron Radiation Facility (ESRF), Grenoble, France through experiment IH-LS-1541. Ricardo Araújo and Rui M.S. Martins gratefully acknowledge FCT/MEC for a postdoctoral fellowship (SFRH/BPD/96205/2013) and a contract under IF2014 Programme (IF/00036/2014/CP1214/CT0009), respectively. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


Add your feedback

Before adding feedback, consider if it can be asked as a question instead, and if so then use the Question tab. Pointing out typos is fine, but authors are encouraged to accept only substantially helpful feedback.

Some Markdown syntax is allowed: _italic_ **bold** ^superscript^ ~subscript~ %%blockquote%% [link text](link URL)
 
By posting this you agree to PeerJ's commenting policies