Acknowledgements
Brenda Brookes skillfully assembled and enhanced the illustrations for publication. Creative Commons Licenses employed in this article: CC BY 2.0 (Attribution 2.0 Generic): http://creativecommons.org/licenses/by/2.0/; CC BY 3.0 (Attribution 3.0 Unported): http://creativecommons.org/licenses/by/3.0/; CC BY SA 3.0 (Attribution-ShareAlike 3.0 Unported): https://creativecommons.org/licenses/by-sa/3.0/. CC BY SA 4.0 (Attribution Share Alike 4.0 International license): https://creativecommons.org/licenses/by-sa/4.0/deed.en.