Enaliornis

(from the article `bird`) The major diversification of modern birds probably took place in the Cretaceous, and it must have started early in that period because fragmentary ...
Found on http://www.britannica.com/eb/a-z/e/28

Enaliornis

Enaliornis is a genus of hesperornithine bird which lived in the late Early Cretaceous, making it the oldest known hesperornithine. Fossils have been found near Cambridge, England. Due to its lack of certain{Clarify|date=October 2010} hesperornithid apomorphies, they were much more `conventional` birds and were initially held to be Gaviiformes (..
Found on http://en.wikipedia.org/wiki/Enaliornis
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