Sinornis
| Noun | 1. | Sinornis - sparrow-sized fossil bird of the Jurassic period to the Cretaceous period having a keeled breastbone and vestigial tail; found in China; considered possibly the second most primitive of all birds |
| 单词 | sinornis | |||
| 释义 | Sinornis
Sinornis
Words related to Sinornis
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