<Tr> <Td> </Td> <Td> <P> Vampyroteuthis </P> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Octopods </P> </Td> </Tr> <P> The scientific name Octopoda was first coined and given as the order of octopuses in 1818 by English biologist William Elford Leach, who classified them as Octopoida the previous year . The Octopoda consists of around 300 known species and can be divided into two suborders, the Incirrina and the Cirrina . The incirrate octopuses (the majority of species) lack the cirri and paired swimming fins of the cirrates . In addition, the internal shell of incirrates is either present as a pair of stylets or absent altogether . </P> <Ul> <Li> Order Octopoda Life restoration of Keuppia levante, an extinct species from the Cretaceous <Ul> <Li> Genus † Keuppia (incertae sedis) </Li> <Li> Genus † Palaeoctopus (incertae sedis) </Li> <Li> Genus † Paleocirroteuthis (incertae sedis) </Li> <Li> Genus † Pohlsepia (incertae sedis) </Li> <Li> Genus † Proteroctopus (incertae sedis) </Li> <Li> Genus † Styletoctopus (incertae sedis) </Li> <Li> Suborder Cirrina: finned deep - sea octopus <Ul> <Li> Family Opisthoteuthidae: umbrella octopus The flapjack octopus (Opisthoteuthis californiana) </Li> <Li> Family Cirroctopodidae </Li> <Li> Family Cirroteuthidae </Li> <Li> Family Stauroteuthidae </Li> </Ul> </Li> <Li> Suborder Incirrina <Ul> <Li> Superfamily Octopodoidea <Ul> <Li> Family Amphitretidae </Li> <Li> Family Bathypolypodidae </Li> <Li> Family Eledonidae </Li> <Li> Family Enteroctopodidae </Li> <Li> Family Megaleledonidae Taki, 1961 </Li> <Li> Family Octopodidae </Li> </Ul> </Li> <Li> Superfamily Argonautoidea Shelled argonaut, Argonauta argo <Ul> <Li> Family Alloposidae: seven - arm octopus </Li> <Li> Family Argonautidae: argonauts </Li> <Li> Family Ocythoidae: tuberculate pelagic octopus </Li> <Li> Family Tremoctopodidae: blanket octopus </Li> </Ul> </Li> </Ul> </Li> </Ul> </Li> </Ul>

How many different kinds of octopuses are there