- A sparrow-sized fossil bird associated with Lower Cretaceous having a strutlike pectoral bone and vestigial end; found in Spain; considered most likely the 3rd most ancient of most wild birds.
- sparrow-sized fossil bird for the Cretaceous duration having a vestigial end; present Spain; considered possibly the third most ancient of most birds
- Definition for "ibero-mesornis"
- A sparrow-sized fossil bird associated with Lower Cretaceous…
- View More
- Hypernym for "ibero-mesornis"