Australia Postal Service has issue Six new stamps on a mini-sheet that have postage values of 50 cents and $1.00 named "Creatures of the Slime" on the 21st of April 2005. The stamps depict the world's first animals that date back some 560 million years. Known as Ediacaran fossils, they predate dinosaurs by 1 million years and are probably related to worms, jellyfish, and snails. Found in the Ediacaran Hills of the world heritage Flinders Ranges in South Australia. These tiny organisms fossils have only been found in three other places in the world. Each of the animals is describe as follows:

• Tribrachidium (50c) - may have lived on the sea floor.
• Dickinsonia (50c) - a "germ eater" having a very elegant form.
• Spriggina (50c) - a cross between a segmented annelid worm and an arthropod.
• Kimberella (50c) - probably a soft-shelled mollusc.
• Inaria (50c) - may be one of the oldest fossils of an animal showing the entire body.
• Charnodiscus ($1.00) - a feather-like organism

"Creatures of the Slime" stamps can be purchased as a set of 6, Minisheet of 6, Stamp Pack, or FDC's. The size of each stamp is 37.5 x 26mm and the size of the mini-sheet is 170 x 210mm. Perforation size of the stamps are 13.86 x 14.60 The stamps will be printed by SNP Sprint using the Lithography printing process with Tullis Russell paper. Note: one of the FDC's comes with a special sized miniature sheet.