- The Bird’s Head Plate is a minor tectonic plate incorporating the Bird’s Head Peninsula, at the western end of the island of New Guinea. Hillis and Müller consider it to be moving in unison with the Pacific Plate. P. Bird considers it to be unconnected to the Pacific Plate.
- Cone (Wikipedia)
A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex.