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 SA 2.0 (Attribution-ShareAlike 2.0 Generic): https://creativecommons.org/licenses/by-sa/2.0/; CC BY SA 4.0 (Attribution Share Alike 4.0 International license): https://creativecommons.org/licenses/by-sa/4.0/deed.en.