Two Archeopteryx foraging on the shore.Archeopteryx; Reptilvogel or Urvogel is the earliest and most primitive bird known. It lived during the Late Jurassic Period; 150148 million years ago;.Colour printed illustration by Heinrich Harder from 鈥楾iere der Urwelt' Animals of the Prehistoric World; 1916; Hamburg. Heinrich Harder (1858-1935) was a German landscape artist and book illustrator. From a series of prehistoric creature cards published by the Reichardt Cocoa company. Natural historian Wilhelm Bolsche wrote the descriptive text.