Nedor/Better/Standard Comics produced several sci-fi anthologies...
...none of which lasted more than three issues.
But it certainly wasn't due to lack of quality.
With a contributor list that included Alex Toth, Ross Andru, Mike Sekowsky, Nick Cardy, and Jack Katz, you're talking some of the great and soon-to-be-great storytellers of comics history!
But, there was one other sci-fi creator who did a story for Lost Worlds, one of only four tales he did for comic books.
Jerome Bixby, novelist and short-story writer, as well as screenwriter whose credits include...
IT! the Terror from Beyond Space!
Star Trek "Mirror, Mirror" and "Day of the Dove"
and the short story "It's a Good Life" which was adapted on both the original Twilight Zone tv series (by Rod Serling) and the 1983 feature film (adapted by Richard Matheson).
BTW, around the time he wrote this, Bixby had just left his position as editor of the Planet Stories pulp magazine at Fiction House, where he also contributed a couple of text pieces to Planet Comics and Indians (his only non-genre text story)!
BTW, let me know if this size is readable or not