Aliens!

From Author Wars - https://authorwars.com/publications/aliens-2100.html

Overview:

Title: Aliens!
Author: Jack M. Dann, Gardner R. Dozois
Year: 1980
ISBN-10: 0671831550
Publisher: Pocket Books
Price: $2.25
Pages: xi+305
Binding: Paperback
Type: Anthology
Title Reference: Aliens!
Notes:
First Pocket Books printing April, 1980 1st printing as per number line. Each story has its own unsigned introduction. Cover art is not credited, has Whelan's 'signature' "Interior illustrations by Jack Gaughan" on back cover, every story has a small title-page drawing, each with "JG"