All articles tagged with #jaw
A Lifes Little Mysteries explainer examines why humans uniquely have a chin, outlining several theories—from jaw reinforcement and facial remodeling to potential social signaling—while noting there’s no consensus and that the chin may be a byproduct of how the human face evolved rather than a feature with a single purpose.
Paleontologists have named a new Permian tetrapod, Tanyka amnicola, from nine jaw fossils found in Brazil, notable for a bizarre twisted lower jaw and sideways denticles that suggest an early plant-based diet; the animal may have been up to about three feet long and lived in Gondwana-era lakes roughly 275 million years ago, making it a 'living fossil' in the stem tetrapod lineage.
Paleontologists at the Field Museum describe Tanyka amnicola, a 275-million-year-old stem tetrapod whose jaw is unlike any seen in early vertebrates: a twisted shape with backward-facing, denticle-covered teeth that likely ground plants. Once thought to be a deformity, the jaw appears to be an evolutionary design, suggesting an herbivorous lifestyle for this three-foot-long, salamander-like ancestor and revealing a long-surviving, now-extinct lineage. Only the jaw has been found, so the full appearance remains speculative.
Izzy Sehon, a 22-year-old woman from Los Angeles, underwent a $200,000 surgery to replace her jaw with a prosthetic TMG joint and fat grafts from her stomach after being diagnosed with idiopathic condylar resorption (ICR), a rare condition that causes the bones in your jaw to breakdown. Izzy had struggled with jaw pain, eating, breathing, and sleeping since she was eight years old and faced bullying due to her appearance. She is now happy with her new face and is dreaming about being able to bite into a caramel apple for the first time in 14 years.
Izzy Sehon, a 22-year-old woman from Los Angeles, underwent a $200,000 surgery to have her face injected with fat from her stomach to fix her unique jawline caused by a rare condition called idiopathic condylar resorption (ICR). She suffered from severe bullying due to her appearance, and the surgery has completely transformed her life and her appearance. The 12-and-a-half hour operation involved cutting her jaw in four places, removing her original jaw, and replacing it with custom-made prosthetics. She also had fat grafts from her stomach put into her face to cushion her new TMG joint. Izzy is now happy with how her new face is beginning to look and is dreaming about being able to bite into a caramel apple for the first time in 14 years.