Offers gene annotation of Callorhinchus milii also known as Australian ghost shark. Callorhinchus milii was proposed as a model cartilaginous fish genome because of its relatively small genome size. This genome is estimated to be 910 megabases long, which is the smallest among all the cartilaginous fishes and one-third the size of the human genome (3000 Mb). Because cartilaginous fishes are the oldest living group of jawed vertebrates, the Australian ghost shark genome will serve as a useful reference genome for understanding the origin and evolution of vertebrate genomes including humans, which shared a common ancestor with the Australian ghost shark about 450 million years ago. Callorhinchus milii belongs to the Callorhinchidae family.