Where does “Tithonian” come from?

Tithonian (English) comes from English -ian, from English Hobbesian, from English Hobbes, from English Robert, from Anglo-Norman Robert.

Tithonian (English): A geological age or stage, from 152.1 ±0.9 to ~145.0 mya

Definitions

  1. A geological age or stage, from 152.1 ±0.9 to ~145.0 mya

Ancestry of “Tithonian”, step by step

StepLanguageWordMeaning
1English-ianFrom, related to, or like; One from, belonging...
2EnglishHobbesianInvolving unrestrained, selfish, and uncivilized...
3EnglishHobbesa surname
4EnglishRobert—
5Anglo-NormanRobert—
Every word from Anglo-Norman Robert →Every word from English -ian →Every word from English Robert →