Was wondering why all 13 Solnhofen birds and pre-birds were not included in this analysis?
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A competing online cladogram (www.ReptileEvolution.com/reptile-tree.htm) indicates that each of the 13 Solhnofen birds and pre-birds is unique and not congeneric with the Archaeopteryx holotype. Several nest at the base of Late Jurassic and Early Cretaceous bird clades.
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