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Truth be told, there is ONLY one known specimen of Elasmosaurus platyurus.... the type specimen found by Turner in 1867 and described by Cope (see Carpenter, 1999), so it is difficult to estimate when the species died out. It seems likely,however, that E. platyurus would have been around for several million years about 80 million years ago and then been replaced by later occurring species of elasmosaurs....
If the question is when did elasmosaurs go extinct, then the answer is about the same time as the dinosaurs, about 65 million years ago.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoapatosaurus went extinct in 65 million years ago in the K/T Mass Extinction Event when the all non-bird dinosaurs died out
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When did the brachiosaurus went extinct?
Brontosaurus is an invalid name for Apatosaurus excelsus. Apatosaurus excelsus fossils date to between 154 and 151 million years ago. That means they probably died out about 151 million years ago.
How did apatosaurus become extinct?
they havent gone extinct they have just evolved into humans
What species is an apatosaurus?
There are four accepted species of Apatosaurus. They are Apatosaurus ajax, Apatosaurus excelsus, Apatosaurus louisae, and Apatosaurus parvus.
Why the huayangosaurus went extinct?
huayangosaurus went extinct in the K/T Mass Extinction in 65 million years ago with all Dinosaurs Went Extinct
What plants went extinct of deforestation?
when if the plants went extinct of deforesation will be no life on earth
What does the moa have in common with th dodo?
They are both extinct animals. The dodo went extinct in the late 1600s. The moa went extinct in about 1400.
What date did the smliodon extinct?
it went extinct in 19 b.c
What dinosaur named the apatosaurus is a herbivore?
The apatosaurus is the apatosaurus which is an herbivore.
What would happen if phytoplankton or mosquitos went extinct?
If they went extinct the whole food chain would be out of balance.
Did Cro-Magnon become extinct because of the Ice Age?
Cro-Magnon never went extinct. They evolved into modern Europeans. Neanderthals went extinct.
Did a lot of dinosaurs become extinct before the meteor?
Yes! Many dinosaurs such as stegosaurus and apatosaurus died long before the meteor hit Earth.
When did the dimetrodon went extinct?
the dimetrodon went extinct in the Permian Mass Extiction Event in 250 million years ago
