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The Diplodocus
Alternate names Seismosaurus
Species Diplodocus longus
Allies None
Enemies Godzilla
First appearance Godzilla episode 13,
"The Time Dragons."

The Diplodocus (ディプロドクス,   Dipurodokusu) is a dinosaur kaiju created by Hanna-Barbera that appeared in the 1978 Godzilla episode, "The Time Dragons."


A Diplodocus rose from the depths of the ocean to attack the Calico crew when they were sent back in time by a falling satellite. The dinosaur almost managed to destroy its enemies, but it was stopped by Godzilla. Godzilla surfaced from the jungle to battle the Diplodocus, but once the Diplodocus saw Godzilla's fire breath, it quickly turned around and retreated.


The Diplodocus has no known abilities.


  • Diplodocus was a real dinosaur genus, and was actually an herbivore that lived on land rather than the ocean. Diplodocus lived from 154 to 152 million years ago during the Late Jurassic period and, at up to 25 meters in length, was one of the longest land animals ever to walk the earth.


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