What is "astrosaurs"

Astrosaurs is a series of children's science fiction novels written by Steve Cole, which have been released since 2005. The main characters are space-going dinosaurs named Teggs Stegosaur (a Stegosaurus), Gipsy Saurine (a Corythosaurus), Arx Orano (a Triceratops) and Iggy Tooth (an Iguanodon). The series are published by Random House. The first two Astrosaurs books were released on 1 February 2005, with over twenty books following. The Teeth of the T. Rex was a special edition book written especially for World Book Day. Free trading cards come with each Astrosaur book, featuring foes, weapons, crew members, ships, aliens and many other characters and things found in the relevant book, with a set of 'bonus cards' available to order from the Steve Cole website, which are now believed to have gone out of print, and featured characters from the first eight books. The World Book Day title The Teeth of the T. Rex does not include cards, and is much shorter than the other books. The first five Astrosaurs books have now been released in Audiobook format on CD in the UK. The series is a huge hit with children nationwide. Beginning in late 2010, the books have been re-released with new cover artwork. Currently, books 12-15 are the only ones not to have been given the new covers. Woody Fox is the illustrator on every Astrosaurs book, who also draws the illustrations for the trading cards, with Charlie Fawkes having designed the Astrosaurs logo, consisting of the word 'ASTROSAURS' with the four main characters above it.