Other Fossil Book Links: 
Author:  George Hansen:  TRILOBITES of Black Cat Mountain

Articles:

Austin American Statesman: Central Texas fossil hunter names ancient urchin after Trump
http://www.mystatesman.com/news/news/central-texas-fossil-hunter-names-ancient-urchin-a/ns5cQ/

WMUR Manchester:  New species of fossil sea urchin named after Donald Trump
http://www.wmur.com/article/new-species-of-fossil-sea-urchin-named-after-donald-trump/8252764

MySA:  With fossil, Donald Trump becomes 'permanent part of the scientific record'
http://www.mysanantonio.com/news/local/article/Seguin-restaurant-owner-names-new-fossil-after-10599248.php

Seguin Today:  Local man reviving the passion for collecting fossils; Restaurant owner shares interest in fossil collection with others
http://www.seguintoday.com/default.asp?pid=949096&tblog=56677

Seguin Gazette:  Local fossil collector published book 
http://seguingazette.com/news/article_beb40502-c8bb-11e6-90cb-8fc6fce4d4a1.html

Wikipedia:  Tetragramma donaltrumpi
https://en.wikipedia.org/wiki/Tetragramma_donaldtrumpi#cite_ref-Zoo_2-0

Book Review on Amazon:
https://www.amazon.com/Fossil-Echinoids-Texas-Monograph-Urchins/dp/1617042781/ref=sr_1_6?ie=UTF8&qid=1479481103&sr=8-6&keywords=echinoid+book