noun
- Sparrow-sized fossil bird of the Cretaceous period having a vestigial tail; found in Spain; considered possibly the third most primitive of all birds. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). ibero-mesornis. Retrieved September 23, 2026, from http://smartdefine.org/ibero-mesornis/definitions/1195125 |
| Chicago | WordNet. 2010. "ibero-mesornis" http://smartdefine.org/ibero-mesornis/definitions/1195125 (accessed September 23, 2026). |
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