Marine reptiles were not technically "dinosaurs" but some were exceptionally large, such as the pliosaurs, pleisosaurs, icthyosaurs, and mososaurs.
These included:
Archelon - giant turtles
Askeptosaurus - giant eels
Ichthyosaurus - giant fish-like creatures
Liopleuradon - one of the largest
Mosasaurus - one of the first identified from a fossil, a snakelike sea lizard
Stomatosuchus - 36-foot prehistoric crocodile remarkably similar to modern species
Tylosaurus - a sleek 50-ft swimming predator
(see the related link for others)
When the dinosaurs lived there were sea monsters but they were called marine reptiles and were not dinosaurs.
Dinosaurs that lived in the sea are generally referred to as marine reptiles, not dinosaurs. These marine reptiles include creatures like ichthyosaurs, plesiosaurs, and mosasaurs.
No! Although this is a common mistake, all dinosaurs were land animals. All animals that lived in the sea at the same time as the dinosaurs weren't actually classed as dinosaurs even though they have similarities :)
California was under a shallow sea during the time that dinosaurs lived. Dinosaurs lived on land, so none lived in California.
mammals,birds ,insects,primates , and sea creatures
There are no names of underwater dinosaurs because there were no underwater dinosaurs. Sea reptiles that lived at the same time as the dinosaurs were around. Names of these sea-living reptiles include: Liopleurodon, Opthalmosaurus and Tylosaurus.
No dinosaurs lived in the sea. At the same time as the dinosaurs, there were OTHER CREATURES that adopted a pelagic lifestyle. These included Giant turtles, like Archelon, Icthyosaurs ("fish lizards") and Mosasaurs, probably as close to "sea serpents" as the world has ever gotten, as well as the long-necked Pleisosaurs, which did look rather like dinosaurs with flippers, but none of these were actually dinosaurs.
Dinosaurs lived everywhere. You don't necessarily need a map to find out where dinosaurs lived.
Animals of the Ice Age lived after the dinosaurs.
Dinosaurs lived during the Mesozoic Era.
dinosaurs lived for about 250 million years ago.
Some of the dinosaurs that lived in what is now Kenya include Afrovenator, Spinostropheus, and Barosaurus. These dinosaurs lived during the Jurassic and Cretaceous periods and have been found in fossil sites in Kenya.