Where does “Portlandian” come from?

Portlandian (English) comes from English Portland, from English Port, from English portfolio, from Italian portafoglio, from Italian foglio, from Latin folium, from Proto-Italic *foljom, from Proto-Indo-European bʰolh₃yom.

Portlandian (English): The Tithonian stage or age, now considered strata about 150 million years old

Definitions

  1. The Tithonian stage or age, now considered strata about 150 million years old

Ancestry of “Portlandian”, step by step

Portlandian traces back through two separate lines of ancestry.

via English Portland

StepLanguageWordMeaning
1EnglishPortlandnamed for the city in Maine
2EnglishPortUniversity of Portsmouth, used especially following post-nominal letters indicating status as a graduate
3EnglishportfolioA case for carrying papers, drawings,...
4Italianportafogliowallet, billfold; portfolio
5Italianfogliosheet
6Latinfoliuma leaf; a petal; a sheet or leaf of paper
7Proto-Italic*foljom
8Proto-Indo-Europeanbʰolh₃yomleaf
9Proto-Indo-Europeanbʰleh₃-bloom, flower
10Proto-Indo-Europeanbʰel-to sound; to speak, roar, bark; shiny, white; to...
11Proto-Indo-Europeanbʰōl-

via French portlandien

StepLanguageWordMeaning
1FrenchportlandienPortlandian
Every word from Proto-Indo-European bʰōl-