Batman (1966–1968)
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How to Hatch a Dinosaur 

Egghead and Olga, Queen of the Cossacks, steal two pounds of Radium from the Gotham City Radium Center. Using it in their "Zapping Machine," they attempt to hatch an ancient Neosaurus egg, ... See full summary »


Oscar Rudolph


Stanford Sherman, Bob Kane (based upon characters appearing in "Batman" and "Detective" comics magazines created by)




Episode cast overview:
Adam West ... Batman
Burt Ward ... Robin
Yvonne Craig ... Batgirl
Alan Napier ... Alfred
Neil Hamilton ... Commissioner Gordon
Stafford Repp ... Chief O'Hara
Vincent Price ... Egghead
Anne Baxter ... Olga
Jon Lormer ... Professor Dactyl
Mary Benoit ... Petula
William Corcoran ... Boy Scout (as Billy Corcoran)
Violet Carlson ... Old Lady
Pat Becker ... Technician


Egghead and Olga, Queen of the Cossacks, steal two pounds of Radium from the Gotham City Radium Center. Using it in their "Zapping Machine," they attempt to hatch an ancient Neosaurus egg, planning to feed the baby dinosaur a meal of Batman, Robin, and Batgirl. Surprisingly, the machine seems to be working. But when the egg cracks, the baby Neosaurus is more than they can handle. Written by Twenty Penguins

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Release Date:

9 November 1967 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Mono (RCA Sound Recording)



Aspect Ratio:

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Did You Know?


The Neosaurus costume originally appeared as the Questing Beast in Lost in Space: The Questing Beast (1967) episode of Lost In Space, this time painted green instead of red. See more »


When Olga is questioning the technician, one of her men puts a sword under the technician's throat. Then Egghead enters and the sword is gone, and when the shot returns to the technician the sword is back. See more »


Barbara Gordon: Petula, does the library subscribe to South Eastern Regional Journal of Applied Radiology?
Petula: We don't get it any more, Barbara. Remember we had to cancel it last year when the city council cut our budget.
Barbara Gordon: That's right, I forgot. I got to get hold of a copy of it. Who in Gotham City whould have it?
Petula: The only person in Gotham City who subscribes to more periodicals than the public library is millionaire Bruce Wayne.
See more »


Referenced in CHIKARA Chikarasaurus Rex: How to Hatch a Dinosaur (2012) See more »

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User Reviews

Second broadcast is actually the third chapter
26 April 2016 | by kevinolzakSee all my reviews

"How to Hatch a Dinosaur" was intended to be the third Egghead/Olga broadcast but ended up second, stealing radium in order to hatch an egg that should give birth to a prehistoric Neosaurus. Jon Lormer is well cast as Professor Dactyl, and this time the one shot librarian working with Barbara Gordon is Mary Benoit as Petula. By the time the egg actually hatches, Egghead and his cohorts rush out to Chief O'Hara's waiting paddy wagon rather than face the wrath of an angry Neosaurus and its 2500 teeth. Audiences would have to wait six weeks for the second chapter, "The Ogg Couple," which would be the farewell for Egghead and Olga.

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