There are very many extinct species of whales, porpoises, and dolphins. Whales actually descend from a prehistoric dog that lived in the Middle East. Many species of whale thrived and became extinct between the doglike whales millions of years ago and the ones we have today.
Here is a page that has different species of whales and includes a list of extinct whales about 3/4 of the way down.
http://en.wikipedia.org/wiki/List_of_whale_species
Happy to help,
Anon
i believe that Chinese river dolphins and Yangtze river dolphins are extinct
Lots but all were extinct in prehistoric times: e.g. Plesiosaus, Trilobite, Wiwaxia, Opabina, Nautiloid etc.
about 17 are extinct if u include the one that just got extinct this year of 2012
The northern right whales
the unicorn whale.. =]
some will die and suffer and animals can become extinct.
the ocean cant become extinct.
Sword Fish, sea turtles, Hector dolphins, whales
Extinct means the animals no longer exist so there can be no extinct animals in the Sahara. If there were, they would not be extinct.
Extinct means the animals no longer exist. There are many extinct animals, from dinosaurs to dodos.
Millions of animals have been extinct even scientist don't know the number of animals have been extinct, or the names of animals have been extinct.
Nope, because extinct animals do not exist anymore.
No, not if they are extinct.
extinct
Endangered and extinct animals are similar because endangered animals sometimes become extinct.
Animals that are extinct from the earth are animals that used to live on the earth but are all dead now. Endangered animals are almost extinct.
the extinct animals are in heaven and the endangered animals are all over the world in the wild and in zoos.