It is now possible to perform whole - genome shotgun sequencing as well as capture of specific genomic regions for extinct organisms. (science.sciencemag.org)
Conventional shotgun sequencing methods can only be used for fairly short strands of DNA. (sciencemag.org)
Whole Genome Shotgun Sequencing of the Castor Bean Plant, Ricinus Communis cDNA Sequencing and Gene Annotation (jcvi.org)