Untitled

Remarks: Established as a class of the phylum
Arthrocochlides, including the orders
Rostrifera, Proboscidifera, and Heteropoda.
Treated by Ihering (1891: 243) as an order
of the class Cochlidae.
Orthoneuroídes Bouvier, 1887
Reference: Système nerveux, morphologie
générale et classification des gastéropodes
prosobranches: 460-461
Remarks: Vernacular name only. Established
as a section of the "Azygobranches", includ-
ing the families Neritopsidae, ?Macluritidae,
Neritidae, Hydrocaenidae, and Helicinidae.
See also "Mononéphridés".
Orthostrophina Linsley & Kier, 1984 [29
March]
Reference: Malacologia, 25(1): 250
Remarks: Established as an order containing
the superfamily Pelagielloidea only.
Orthurethra Pilsbry, 1900 [10 November]
Reference: Proceedings of the Academy of
Natural Sciences of Philadelphia, 52: 562
Remarks: Established as a division of Vasopulmonata,
containing the families Partulidae,
Pupidae, ?Valloniidae, ?Cochlicopidae, and
Achatinellidae.
Otinoidei H. Nordsieck, 1993 [31 January]
Reference: Archiv fijr Molluskenkunde, 121:
48
Remarks: Established as a suborder of Systellommatophora.
No contents given.
OvuLoiDEi Golikov & Starobogatov, 1989
Reference: Trudy Zoologicheskogo Instit ta,
187:72
Remarks: Established as a suborder includ-
ing the family Ovulidae only.
OxYGNATHA Mörch, 1859
Reference: Malakozoologische Blätter, 6: 109
Remarks: Established as a family (see family
list). Treated by Hutton (1884: 188, 204) as
a "sub-section" of the "section" Holognatha
containing the families Vitrinidae, Limacidae,
and Zonitidae.
OxYNOACEAOdhner, 1939 [26 August]
Reference: Det Kongelige Norske Videnskab-
ers Selskabs Skrifter, 1 939(1 ): 1
Remarks: Established as a suborder of the
Sacoglossa, containing the family Oxynoidae
only. Spelling and rank emended by Golikov
NOMENCLÁTOR OF GASTROPOD FAMILIES 219
& Starobogatov (1989: 68) to order Oxynoiformes
[attributed to Baba, 1966], containing
the suborders Lobigeroidei and Oxynoo-
idei.
Pachygnatha Odhner, 1939 [26 August]
Reference: Det Kongelige Norske Videnskabers
Selskabs Skrifter, 1 939(1 ): 48
Remarks: Established at unspecified rank
above family, containing the family Antiopel-
lidae. Treated by Taylor & Sohl (1962: 12)
as infraorder of the suborder Arminoidea.
Palaeocaenogastropoda Bändel, 1993 [December]
Reference: Scripta Geológica, Special issue
2:8
Remarks: Original spelling Palaeo-Caenogastropoda.
Established as a division of the Caenogastropoda
containing the superfamilies
Cerithioidea, Littorinoidea, Rissooidea, Subulitoidea,
Murchisonioidea, Loxonematoidea,
Cyclophoroidea, and Ampullarioidea.
Palliata Ray Lankester, 1883
Reference: Encyclopaedia Britannica, ed. 9,
16:648,655
Remarks: Established as a division of the order
Opisthobranchia, as a substitute name
forTectibranchiata, including the suborders
Ctenidiobranchia and Phyllidiobranchia.
Palliohedyloidei Starobogatov, 1983 [after 22
February]
Reference: Vsesoiuznoe soveshchanie po
izucheniiu molliuskov, 7:31
Remarks: Established as a suborder contain-
ing the family Palliohedylidae only.
Palmatopoda Mayer, 1849
Reference: Verhandlungen des Naturhistorischen
Vereines der Preussischen Rheinlands
und Westphalens, 6: 205
Remarks: Established as an order of the class
Gasteropoda, including all the gastropods
other than Heteropoda and Pteropoda.
Paludinimorpha Golikov & Starobogatov, 1975
[18 December]
Reference: Malacologia, 15(1): 210
Remarks: Established as a superorder con-
taining the order Architaenioglossa only.
Papillifera P Fischer, 1883 [20 December]
Reference: Manuel de conchyliologie et de
paléontologie conchyliologique, (6): 532