Sepiolidae is a family of bobtail squid encompassing 15 genera in three or four subfamilies.
Decapodiformes is a superorder of Cephalopoda, which includes all species with ten limbs; the name derives from the Greek word meaning ten feet. The ten limbs are divided into eight short arms and two long tentacles. It is hypothesized that the ancestral coleoid had five identical pairs of limbs, and that one branch of descendants evolved a modified arm pair IV to become the Decapodiformes, while another branch of descendants evolved and then eventually lost its arm pair II, becoming the Octopodiformes.
Euprymna tasmanica, also known as the southern dumpling squid or southern bobtail squid, is a bobtail squid that lives in the shallow temperate coastal waters of southern Australia's continental shelf. It lives for between 5 and 8 months and the adults can grow up to 6 or 7 cm long with a mantle length of 3 to 4 cm. They are found in seagrass beds or areas with soft silty or muddy bottoms from Brisbane on the east coast to Shark Bay on the west, as well as around Tasmania. Southern dumpling squid are nocturnal and during the day hide in sand or mud covered in a mucus-lined coat of sediment. If disturbed acid glans can quickly remove this coat as an additional decoy to ink squirting.
Stoloteuthis is a small genus of bobtail squid in the family Sepiolidae and the subfamily Heteroteuthidinae with one species, Stoloteuthis leucoptera, which is found in the western and eastern Atlantic Ocean, the Mediterranean Sea, the Indian Ocean, the Antarctic Ocean and the southwestern Pacific Ocean. The other species, Stoloteuthis japonica. was described in 2011 from a type specimen collected off northeastern Honshu.
Heteroteuthidinae is a subfamily of bobtail squid encompassing five genera and around ten species.
Rossiinae is a subfamily of bobtail squid encompassing four genera and around twenty species.
Sepiolinae is a subfamily of bobtail squid encompassing 5 genera and more than 30 species.
Rôssia is a genus of bobtail squid encompassing around ten species.
Austrorossia is a genus of bobtail squid encompassing five species.
Neorossia is a genus of bobtail squid comprising two species.
Iridoteuthis is a genus of bobtail squid comprising two species.
Euprymna is a genus of bobtail squid comprising around ten species.
Sepietta is a genus of bobtail squid comprising three species.
Sepioloidea is a genus of cuttlefish comprising three species.
Sepiolina nipponensis, also known as the Japanese bobtail squid, is a bobtail squid and the only species in the genus Sepiolina. It is found in the Western Pacific in apparently widely separated populations, the most southerly of which is in the Great Australian Bight in South Australia and West Australia and then there are populations from the Philippines northwards to Taiwan, Fujian and southern Honshū.
Sepiolina is a small genus of bobtail squid in the family Sepiolidae and the subfamily Heteroteuthidinae from the western Pacific Ocean.
Neorossia caroli, the Carol bobtail squid, is a species of bobtail squid belonging to the family Sepiolidae.
Sepiolina petasus is a species of bobtail squid in the genus Sepiolina in the subfamily Heteroteuthidinae of the family Sepiolidae. It was originally collected in the Pacifc Ocean near the Okinawa Islands. It was found to be sympatric with Sepiolina nipponensis but differs from that species by its relatively elongated posterior mantle, leading to more anteriorly situated fins.
