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Binomial Name. Archaeopteryx lithographica. Archaeopteryx is an extinct bird that evolutionists argue possesses some reptilian-like features causing it to be classified as a evolutionary transitional form, and is considered the first of the so called feathered dinosaurs.inomial Name. Archaeopteryx lithographica. Archaeopteryx is an extinct bird that evolutionists argue possesses some reptilian-like features causing it to be classified as a evolutionary transitional form, and is considered the first of the so called feathered dinosaurs.
Best Answer: The ancestor of birds belong to the group of reptiles known as Archosauria. Archosauria is part of Class Reptilia.Birds themselves are not classified as archosaurs, since most sane scientists classify birds in Class Aves.ating Newest Oldest. Best Answer: The ancestor of birds belong to the group of reptiles known as Archosauria. Archosauria is part of Class Reptilia. Birds themselves are not classified as archosaurs, since most sane scientists classify birds in Class Aves.