Archaeopteryx lithographica

Archaeopteryx lithographica ("ancient feather-wing") is the earliest and most primitive known avian, which lived during the late Jurassic around 155 to 151 million years ago in present-day Germany. Eight specimens of the species have found — technically, seven actual specimens and one feather! It has a jaw with a full set of teeth, a rather flat sternum ("breast-bone"), a furcula ("wishbone"), gastralia ("belly ribs"), a long bony feathered tail, and three claws on its feathered wings. This "missing link" is a transitional fossil, with features clearly intermediate between those of modern reptiles and birds. Birds are dinosaurs, thus dinosaurs are not (technically) extinct:  Support evolution, baby!

(I apologise for any inaccuracies, I sketched this from memory.)

Medium - 2B mechanical pencil.

© Diane N. Tran.