Mikko's Phylogeny Archive Main Groups of Protostomes   Spirulida

After Engeser, 1998-

<==o SPIRULIDA Pompeckj, 1912 [non Stolley, 1919?] (postitorvet)
   |--o †GROELANDIBELIDA Khromov, 1990
   |  |-- †Groenlandibelidae Jeletzky, 1966
   |  `-- †Adygeyidae Doguzhaeva, 1996
   |--o †BELOPTERINA Engeser, 1998
   |  |-- †Belemnoseidae Wiltshire, 1869
   |  `-- †Belopteridae Owen, 1856
   `--o SPIRULINA Pompeckj, 1912
      |-- †Spirulirostridae Naef, 1921
      |-- †Spirulirostrinidae Naef, 1921
      `--o Spirulidae Rafinesque, 1815 [non Owen, 1836?]
         `-- Spirula spirula (Linnaeus, 1758) Lamarck, 1799 (postitorvet) [has been treated as a Sepioid]

Reference(s):

Engeser, T., 1998-1998: Classification & Phylogenetic tree.
–iNet: The Fossil Coleoidea Page: http://userpage.fu-berlin.de/~palaeont/fossilcoleoidea/welcome.html

Felley, J., Vecchione, M., Roper, C. F. E., Sweeney, M. & Christensen, T., 2001-2003: Current Classification of Recent Cephalopoda.
–iNet: National Museum of Natural History: Departent of Systematic Biology: Invertebrate Zoology: http://www.mnh.si.edu/cephs/