Amethyst Crystal Bird Mouth Skull Statue
This Bird Mouth Skull Statue is hand-carved from natural stone with fine polishing, well-crafted. Every crystal bird bead statue specimen is unique. Amethyst represents spirituality, spirit, and high-level love, and can be used as a kind of affection and token of admirers. As a traditional amulet, amethyst can drive away evil luck and improve intuition. The Birds’ Skull consists of 5 major bones: the frontal (top of head), parietal (back of head), premaxillary and nasal (top beak), and the mandible (bottom beak). The skull of a normal bird usually weighs about 1% of the bird’s total body weight. The eye occupies a considerable amount of the skull and is surrounded by a sclerotic eye-ring, a ring of tiny bones. This characteristic is also seen in their reptile cousins. Broadly speaking, avian skulls consist of many small, non-overlapping bones. Pedomorphosis, maintenance of the ancestral state in adults, is thought to have facilitated the evolution of the avian skull. In essence, adult bird skulls will resemble the juvenile form of their theropod dinosaur ancestors. As the avian lineage has progressed and has pedomorphosis has occurred, they have lost the postorbital bone behind the eye, the ectopterygoid at the back of the palate, and teeth. The palate structures have also become greatly altered with changes, mostly reductions, seen in the pterygoid, palatine, and jugal bones.
A reduction in the adductor chambers has also occurred. These are all conditions seen in the juvenile form of their ancestors. The premaxillary bone has also hypertrophied to form the beak while the maxilla has become diminished, as suggested by both developmental and paleontological studies. This expansion into the beak has occurred in tandem with the loss of a functional hand and the developmental of a point at the front of the beak that resembles a “finger“. The premaxilla is also known to play a large role in feeding behaviours in fish. The structure of the avian skull has important implications for their feeding behaviours. Birds show independent movement of the skull bones known as cranial kinesis. Cranial kinesis in birds occurs in several forms, but all of the different varieties are all made possible by the anatomy of the skull. Animals with large, overlapping bones (including the ancestors of modern birds) have akinetic (non-kinetic) skulls. For this reason it has been argued that the pedomorphic bird beak can be seen as an evolutionary innovation. Birds have a diapsid skull, as in reptiles, with a pre-lachrymal fossa (present in some reptiles). The skull has a single occipital condyle. Amethyst Crystal Bird Mouth Skull Statue measures: 3.15 inches / 8 cm x 2.7 inches / 7 cm x 1.35 inches / 3.5 cm.
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