After Birstein, Doukakis & DeSalle, 2002 [Fig. 1a.], and Grande & Hilton, 2009, with Recent species from Froese & Pauly, 2001 [“The Fishbase”]

<==o Acipenseridae Bonaparte, 1831 sensu Bemis, et al., 1997 (sammet; Sturgeons)
   |?- †“Acipenseralbertensis Lambe, 1902 [Acipenser albertensis Lambe, 1902; Wilimovsky, 1956; “Acipenser” albertensis Lambe; Bryant, 1989; Hilton & Grande, 2006] U.Cret. WNAm.
   |?- †“Acipensereruciferus (Cope, 1876) [Ceratodus eruciferus Cope, 1876; Ceratodus hieroglyphus Cope, 1876; Estes, 1964; Rhineastes eruciferus (Cope) Lambe, 1902; Acipenser eruciferus (Cope) Estes, 1964; Estes, Berberian & Meszoely, 1969; “Acipensereruciferus (Cope) Bryant, 1989; Hilton & Grande, 2006] U.Cret. WNAm.
   |?- †“Acipenserornatus Leidy, 1873a [Acipenser ornatus Leidy, 1873a, 1873c; Wilimovsky, 1956; Acipenser oxyrhynchus Mitchell, 1815; Purdy et al., 2001; “Acipenserornatus Leidy; Hilton & Grande, 2006] U.Cret. WNAm.
   |-- †Protoscaphirhynchus squamosus Wilimovsky, 1956; U.Cret. NAm.
   `--+-- †Priscosturion longipinnis (Grande & Hilton, 2006) Grande & Hilton, 2009 [Psammorhynchus longipinnis Grande & Hilton, 2006, non Psammorhynchus Meixner, 1938, a flatworm (Platyhelmithes)] [Priscosturioninae Grande & Hilton, 2009]
      |--o Scaphirhynchini Bonaparte, 1846
      |  |?- Pseudoscaphirhynchus rossikowi Nikolskii, 1900
      |  `--o Scaphirhynchus
      |     |-- S. albus (Forbes & Richardson, 1905) (Pallid sturgeon)
      |     |-- S. platorynchus (Rafinesque, 1820) (Shovelnose sturgeon)
      |     `-- S. suttkusi Williams & Clemmer, 1991 (Alabama sturgeon)
      `--o Acipenserinae Bonaparte, 1831
         `==o Acipenser Linnaeus, 1758 [incl. Huso Brandt, 1869]
            |--+-- Acipenser sturio Linnaeus, 1758 (sampi; Sturgeon)
            |  `--o Acipenser oxyrhynchus Mitchill, 1815 [A. oxyrinchus]
            |     |-- A. o. desotoi Vladykov, 1955 (Gulf sturgeon)
            |     `-- A. o. oxyrhynchus Mitchill, 1815 (Atlantic sturgeon)
            `--+-- Acipenser sinensis Gray, 1835 (Chinese sturgeon)
               |--+-- Acipenser schrenckii Brandt, 1869 (Amur sturgeon)
               |  `--+-- Acipenser medirostris Ayres, 1854 (Green sturgeon)
               |     `-- Acipenser transmontanus Richardson, 1836 (valkosampi; White sturgeon)
               `--+?- Acipenser dabryanus Duméril, 1869 (jangtsensampi; Yangtze sturgeon) [not treated by Birstein, Doukakis & DeSalle (2002)]
                  |?- Acipenser multiscutatus Tanaka, 1908 (Japanese sturgeon) [not treated by Birstein, Doukakis & DeSalle (2002)]
                  |-- Acipenser mikadoi Hilgendorf, 1892 (Sakhalin sturgeon)
                  `--+-- Acipenser fulvescens Rafinesque, 1817 (järvisampi; Lake sturgeon)
                     |-- Acipenser nudiventris Lovetzky, 1828 (Fringebarbel sturgeon)
                     |--+-- Huso dauricus (Georgi, 1775) (kaluga)
                     |  `--+-- Huso huso (Linnaeus, 1758) (kitasampi; beluga)
                     |     `-- Acipenser ruthenus Linnaeus, 1758 (sterletti; Sterlet)
                     |--+-- Acipenser stellatus Pallas, 1771 (Starry sturgeon)
                     |  `--o Pseudoscaphirhynchus [Kessleria]
                     |     |?- P. fedtschenkoi (Kessler, 1872) (Syr Darya sturgeon) [not treated by Birstein, Doukakis & DeSalle (2002)]
                     |     |-- P. hermanni (Kessler, 1877) (Dwarf sturgeon)
                     |     `-- P. kaufmanni (Kessler, 1874) (Amu Darya sturgeon)
                     `--+-- Acipenser brevirostrum Lesueur, 1818 (Shortnose sturgeon)
                        `--+--o Acipenser baerii Brandt, 1869 (siperiansampi)
                           |  |-- A. b. baerii Brandt, 1869 (siperiansampi; Siberian sturgeon)
                           |  |-- A. b. baicalensis Nikolskii, 1896 (baikalinsampi; Baikal sturgeon)
                           |  `-- A. b. stenorrhynchus Nikolskii, 1896 (lenansampi; Lena River 
                           `--+-- Acipenser gueldenstaedtii Brandt & Ratzeberg, 1833 (venäjänsampi; russian sturgeon)
                              `--+-- Acipenser naccarii Bonaparte, 1836 (Adriatic sturgeon)
                                 `-- Acipenser persicus Borodin, 1897 (Persian sturgeon)

Reference(s):