Why the dinosaurs died out on Zephalogia

From Author Wars - https://authorwars.com/books/why-the-dinosaurs-died-out-on-zephalogia-1329340.html

Overview:

Title: Why the dinosaurs died out on Zephalogia
Author: John Grey
Year: 1998
Type: Poems

Editions/Publications:

Unknown. Star*Line, September-October 1998 (Unknown, John Grey, SFPA, 20 pages, octavo, MAGAZINE)