[Solved] What Constitutional Amendment would someone most likely reference if they were against government attempts to regulate pornography? A) First B) Second C) Third D) Fourth Teleost: A large group of fish characterized by a movable jaw and a bony skeleton, with over half of all known fish species classified as teleosts. Shark: A group of elasmobranch fish characterized by their cartilaginous skeletons, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Tuna: A species of saltwater fish that belongs to the tribe Thunnini, a subgrouping of the mackerel family. Extant Mammal Groups: Currently living mammalian groups, such as marsupials, rodents, and primates, that have differentiated into distinct species through evolution.