[2] An accepted part of DC Comics history, Super-Turtle tends to show up once in a while in one form or another; e.g., a Super-Turtle figure hangs from the ceiling of the Planet Krypton restaurant in Kingdom Come and he had a cameo appearance in the one-shot Superman and Batman: World's Funnest.
His most recent comic book appearance was in issue #3 of the 2008 miniseries Ambush Bug: Year None, in which he plays a role like the one Superboy-Prime played in Infinite Crisis; after living in Limbo with Kal-L and company, Super-Turtle (who now calls himself Clark Kent) starts destroying anyone he considers to be a phony Super-Turtle, including Bat-Mite and Conner Kent.
[3] Super-Turtle has since appeared in Sleepy Time Crime from Capstone Publishing's DC Super-Pets line of children books.
The scientist Shh-Ell realizes that the planet is doomed and convinces the Science Council to evacuate.
Slow by nature, the turtles only build one spaceship, in which Shh-Ell's infant son, Tur-Tel, is sent to Earth.