The most well known types of fossilization are permineralization and carbonization or distillation. Certain parameters must be met in order for fossils to form. They are a rapid death and fast burial in relatively anaerobic conditions. Any prolonged exposure to the elements will decrease the chances of fossilization.
The symptoms of chronic pancreatitis are similar to those of acute pancreatitis. Patients frequently experience constant pain in the upper abdomen that radiates to the back. In some patients, the pain may be disabling. Other symptoms may include weight loss caused by poor absorption (malabsorption) of food.
When it comes to stomach pain, finding the cause of your tummy trouble can be harder than solving an advanced Sudoku. Use this symptom decoder to help decipher what's up with your gut. 1. Acid Reflux. What it is: Acid flowing backward from the stomach up into the throat. It affects 20 percent of adults at least once a week. What it feels like: Pain or burning below your breastbone that's usually worse after you eat or when you lie down, says David Peura, M.D., former chairman of the National Heartburn Alliance.