The most common cause of an obstruction in the biliary tree is a bile duct stone (choledocholithiasis). This includes a stone or stones lodged in the common hepatic, cystic or common bile ducts. The causes, symptoms and treatment is discussed further under Bile Duct Stones.
The U.S. Federal government has listed the leatherback as endangered worldwide. Within the U.S., the leatherback is known to nest in Southeastern Florida, Culebra, Puerto Rico, and St. Croix.The leatherback is the largest living turtle and is so distinctive that it is placed in its own separate family, Dermochelys. All other sea turtles have bony hard plates on their shells (carapace).ithin the U.S., the leatherback is known to nest in Southeastern Florida, Culebra, Puerto Rico, and St. Croix. The leatherback is the largest living turtle and is so distinctive that it is placed in its own separate family, Dermochelys. All other sea turtles have bony hard plates on their shells (carapace).
These changes are likely to affect all marine turtles and many other marine species. Leatherback turtLeS and cLimate change Turtle-y exposed to climate change the iucn red List of threatened Species â¢ Â© Brian J. Hutchinson. The Leatherback Turtle (Dermochelys coriacea) is the largest of all the living turtles.Leatherbacks can reach lengths of nearly two metres and can weigh more than 500 kg. The largest specimen ever found weighed an astounding 916 kg, justifying the Leatherbackâs title as a âgentle giantâ of the oceans.hese changes are likely to affect all marine turtles and many other marine species. Leatherback turtLeS and cLimate change Turtle-y exposed to climate change the iucn red List of threatened Species â¢ Â© Brian J. Hutchinson. The Leatherback Turtle (Dermochelys coriacea) is the largest of all the living turtles.