Project description:We present a genome assembly from an individual Aplidium turbinatum (Chordata; Ascidiacea; Aplousobranchia; Polyclinidae). The genome sequence is 605 megabases in span. The majority of the assembly (99.98%) is scaffolded into 18 chromosomal pseudomolecules. The complete mitochondrial genome was also assembled and is 18.4 kilobases in length.