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Considered possibly the second most primitive of all birds
Answer for the clue "Considered possibly the second most primitive of all birds ", 8 letters:
sinornis
Alternative clues for the word sinornis
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Wikipedia
Word definitions in Wikipedia
Sinornis is a genus of enantiornithine birds. The fossils recovered from the Lower Cretaceous lake deposits from the Jiufotang Formation at Liaoning , People's Republic of China . This 135 million-year-old sparrow-sized skeleton represent a new avian which ...