"Worlds Enough, and Time" is a short story by Harry Turtledove.
“Canadia was an annelid that first appeared in the Cambrian explosion. Canadia was one of several...Canadia
“Aysheaia (or Aysheia) pedunculata was a soft-bodied, caterpillar-shaped organism average body...Aysheia
“The Cambrian is a major division of the geologic timescale that begins about 542 ± 1.0 Ma...Cambrian
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- [×] Worlds Enough, and Time Characters (6 P)