There are two types of bile duct cancer: 1  Intrahepatic bile duct cancer : This type of cancer forms in the bile ducts inside the liver. 2  Extrahepatic bile duct cancer : The extrahepatic bile duct is made up of the hilum region and the distal region.
Crocodiles (subfamily Crocodylinae) or true crocodiles are large aquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. Crocodylinae, all of whose members are considered true crocodiles, is classified as a biological subfamily. A broader sense of the term crocodile, Crocodylidae that includes Tomistoma, is not used in this article. The term crocodile here applies only to the species within the subfamily of Crocodylinae.
Crocodile & Alligator Differences. Crocodiles and alligators are both reptiles from the same order of animals, named Crocodylia. There are however a number of important differences which set these apex predators apart. Read on to find out what some of these differences are while enjoying all our animal facts for kids. Crocodiles. Crocodiles have a longer, more V-shaped head then alligators. The fourth tooth of a crocodile sticks out when its mouth is closed.