Deletion of Gya

Comment: I performed another search and found mentions of this term in several works: http://www.astronomy.ohio-state.edu/~pogge/Ast141/Unit3/Lect20_LifeHistory.pdf http://www.astro.sunysb.edu/astro/seminars/archive/JS09/jcl20Mar09.pdf http://www.micro.siu.edu/micr425/14.pdf http://www.dailygalaxy.com/my_weblog/2009/05/the-18-gigayear.html http://books.google.com/books?id=T0_9nNv3kZoC&pg=PA4&dq=gya+-gay+paleontology&hl=en&ei=GNNlTrGHF8XEtAbi-5ipCg&sa=X&oi=book_result&ct=result&resnum=5&ved=0CD8Q6AEwBA#v=onepage&q=gya&f=false http://books.google.com/books?ei=GNNlTrGHF8XEtAbi-5ipCg&ct=result&id=RlgQAQAAMAAJ&dq=gya+-gay+paleontology&q=gya#search_anchor. The problem with all the sources presented here are in my opinion that they are either not reliable or those which are (I found one article in a peer reviewed journal: http://www.astro.sunysb.edu/astro/seminars/archive/JS09/jcl20Mar09.pdf) only simply use the term. Wikipedia #DICTIONARY|is not a dictionary however, so unless someone can bring up sources which discuss the ''concept behind Gya'' I still think this article should be merged
Stance: comment
Cited policy: Wikipedia:What Wikipedia is not (WP:NOT)

Comment: into Year#SI prefix multipliers, as it doesn't seem to pass . Unless there are sources actually ''discussing'' this term instead of merely ''using'' it I fail to see where this topic has significant coverage by third party sources
Stance: merge
Cited policy: Wikipedia:Notability (WP:GNG)