English
eopterosaur
From eo- + pterosaur.
Proto-Indo-European *h₂ews- ‘to dawn’
Proto-Indo-European *h₂éwsōs ‘dawn’
Proto-Hellenic *auhṓs ‘dawn’
Ancient Greek ἠώς ‘dawn’
English eo-
Today it means
noun A member of the Eopterosauria clade.
Language periods are conventional ranges, not dates for this word.
Etymograph / eopterosaur