Thrilling Wonder Stories, November 1940.
Earl Bergey cover illustrates “The Tomb of Time” by Robert Arthur.
A scientist finds a cache of viable Mesozoic eggs hidden in a cliff. They hatch, giving birth to a variety of miniature dinosaurs.
The eggs were placed there by a member of an intelligent dinosaur species in the hope they would survive the imminent catastrophe and allow dinosaur-kind to live again in the future. Some eggs of the intelligent dinosaur species are among the cache.