(n) sparrow-sized fossil bird of the Cretaceous period having a vestigial tail; found in Spain; considered possibly the third most primitive of all birds
n. A sparrow-sized fossil bird of the Lower Cretaceous having a strutlike pectoral bone and vestigial tail; found in Spain; considered possibly the third most primitive of all birds. [ WordNet 1.5 ]
(n) sparrow-sized fossil bird of the Cretaceous period having a vestigial tail; found in Spain; considered possibly the third most primitive of all birds
The Collaborative International Dictionary of English (GCIDE) v.0.53
n. A sparrow-sized fossil bird of the Lower Cretaceous having a strutlike pectoral bone and vestigial tail; found in Spain; considered possibly the third most primitive of all birds. [ WordNet 1.5 ]
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