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The basal bird Archaeopteryx, from the Jurassic, is well known as one of the first "missing links" to be found in support of evolution in the late 19th century. Though it is not considered a direct ancestor of modern birds, it gives a fair representation of how flight evolved and how the very first bird might have looked.
A turning point came in the early twentieth century with the writings of Gerhard Heilmann of Denmark.An artist by trade, Heilmann had a scholarly interest in birds and from 1913 to 1916, expanding on earlier work by Othenio Abel, [12] published the results of his research in several parts, dealing with the anatomy, embryology, behavior, paleontology, and evolution of birds. [13]
Earliest ostriches, trees representative of most major groups of oaks have appeared by now. [102] 20 Ma First giraffes, hyenas, and giant anteaters, increase in bird diversity. 17 Ma First birds of the genus Corvus (crows). 15 Ma Genus Mammut appears in the fossil record, first bovids and kangaroos, diversity in Australian megafauna. 10 Ma
In western North America during the twilight of the dinosaur age, the unquestioned ruler was Tyrannosaurus rex, one of the largest terrestrial predators in Earth's history. Researchers have ...
The oldest fossil evidence for paravians — the dinosaur group that includes the earliest birds and their closest relatives — appears around the middle of the Jurassic Period (201.3 million to ...
In heraldry, birds, especially eagles, often appear in coats of arms [326] In vexillology, birds are a popular choice on flags. ... as Ottorino Respighi first did; ...
Birds evolved in the Jurassic Period from small feathered dinosaurs, and represent the only dinosaur group to have survived the mass extinction event. Celebrated dino-bird Archaeopteryx could fly ...
c. 62 Ma – Fall in sea level and the retreat of inland seas completes the emergence of North America; First penguins appear – Genus Crossvallia, the earliest known birds suited to an aquatic lifestyle, alongside Kupoupou appear in the fossil record of Antarctica (from the Cross Valley Formation on Seymour Island) and New Zealand (Takatika ...