The Fossil and Etchings

From Author Wars - https://authorwars.com/publications/the-fossil-and-etchings-488386.html

Overview:

Title: The Fossil and Etchings
Author: Eric Flint
Year: 2012
Publisher:
Price: $2.99
Binding: ebook
Type: Collection
Title Reference: The Etchings from Ceres
Notes: From Amazon: "These stories were his initial attempts to approach the material that eventually took form as the novel Boundary, and it's sequel Threshold which he co-authored with Ryk Spoor."