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Brooch in the form of a fool, ca. 1897-1899, René Lalique

Rijksmuseum, Amsterdam, Netherlands.

reconstruction of Archaeopteryx

Archaeopteryx fossil - Berlin specimen

Paleontologists have long thought that Archaeopteryx ('ancient feather' or 'ancient wing') fossils placed the dinosaur at the base of the bird evolutionary tree. Recent evidence suggests the beast may be best described as a birdlike dinosaur rather than an early bird, though it probably could fly after a fashion. Archaeopteryx is about 150 million years of age, while the ancestor of all living birds lived sometime in the Late Cretaceous — 50 to 65 million years ago.

In 1861, the first Archaeopteryx skeleton, which was missing most of its head and neck, was unearthed near Langenaltheim, Germany. However, the most complete skeleton, the Berlin Specimen, was discovered in 1874 or 1875 near Eichstatt, Germany by farmer Jakob Niemeyer, who sold it in 1876 to innkeeper Johann Dörr. Through various transactions, the fossil, which is the first found to have an intact head, eventually wound up being in the Humboldt Museum fur Naturkunde, where it still resides. To date there have been 11 other Archaeopteryx fossils found, the latest discovered in 2010 (described in 2014). All of the fossils come from the limestone deposits near Solnhofen. Recent tests performed on the specimens indicate that the primary coloring of the feathers of Archaeopteryx were black, possibly with lighter colored tips.

Jurassic deposits of Solnhofen limestone in southern Germany are marked by rare but exceptionally well preserved fossils of many species. It was first quarried nearly 2,000 years ago by the Romans who used the stone for paving roads and building walls. In later Roman times the mosaic floor of the church of Hagia Sofia in Istanbul was made of this limestone. In the Middle Ages, the stone was also used as floor and roofing material, and artisans used the material in the making of bas-relief sculptures and headstones. A decisive turning point in the history of the stone was the determination in 1673 by Alois Senefelder that the dense, fine-grained material was ideally-suited for use in the newly discovered printing process of lithography, a use that caused quarrying to increase dramatically.

#fossil #Archaeopteryx #Solnhofen limestone #lithographic stone #bird relative #dinosaur #feathered