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Macroon Pilsbry, 1893 [14 February]
Reference: Proceedings of the Academy of
Natural Sciences of Philadelptiia, 44: 390-
391
Remarks: Established as a "group" above genus.
Not available as a family-group name
(not based on a genus). See Macroogona.
Macrostoma Lamarck, 1812 [October]
Reference: Extrait du cours de zoologie: 1 1
Remarks: Original spelling "les Macrostomes"
(vernacular). Latinized by Latreille (1825:
199). Spelling emended to Macrostomidae
by Broderip (1839: 320). Taxon containing
the genera Stomatia and Stomatella, established
as a family and not available as such
(not based on a genus).
Madrellidae Preston, 1911 [January]
Reference: Zoological Record, 46(N): 76
Type genus: MadrellaA\der &. Hancock, 1864
Remarks: Not available from Vayssière (1 909:
636), who had established "Madrellidés"
(vernacular name published after 1900).
Magilidae Thiele, 1925 [before 10 November]
Reference: Deutsche Tiefsee-Expedition
1898-1899, 17(2): 138 [172]
Type genus: Magilus Montfort, 1810
Maikhanellidae Missarzhevsky, 1989 [after 10
July]
Reference: Trudy Geologicheskogo Instituía,
Akademiia Nauk SSSR, 443: 179
Type genus: \Maikhanella Zhegallo, 1982
Remarks: Original spelling Majkhanellidae,
based on Majkhanella, an incorrect subsequent
spelling of Maikhanella. -inae, Feng,
Sun & Qian (2001 : 197 [Chinese], 206 [Eng-
lish]).
Maizaniidae Tielecke, 1 940 [1 5 August]
Reference: Archiv für Naturgeschichte, new
ser., 9(3): 365
Type genus: Maizania Bourguignat, 1889
Mammillinae Iredale & McMichael, 1962 [30
May]
Reference: The Australian Museum, Sydney.
Memoir 1 1 : 57
Type genus: Mammilla Schumacher, 1817
Remarks: Not available: no diagnosis.
Mancohedylidae Rankin, 1979 [25 May]
Reference: Royal Ontario Museum, Life Sciences
Contributions, 116: 99
Type genus: Mancohedyle Rankin, 1979
BOUCHET&ROCROI
Remarks: Type genus not available (no type
species designated) from Salvini-Plawen,
1973. See Pontohedylidae.
Mandeliidae Valdés & Gosliner, 1999
Reference: Zoológica Scripta, 28(3-4): 315
Type genus: Mandelia Valdés & Gosliner, 1 999
Mandolininae Schilder, 1932 [15 March]
Reference: Proceedings of the Malacological
Society of London, 20(1): 47
Type genus: ^Mandolina Bayle [in Jousseaume],
1884
Remarks: -ini, Schilder (1936: 107).
Mangeliinae p. Fischer, 1883 [20 December]
Reference: Manuel de conchyliologie et de
paléontologie conchyliologique, (6): 587
Type genus: Mangelia Risso, 1826
Remarks: Original spelling Mangiliinae, based
on Mangilia Lovén, 1846, an unjustified emendation
oí Mangelia.
Mangonuiidae Iredale, 1936 [7 April]
Reference: Records of the Australian Museum,
^9{5). 326
Type genus: Mangonuia Mestayer, 1930
Remarks: Original spelling Mangonuidae.
Maoraxidae Bändel, Gründel & Maxwell, 2000
Reference: Freiberger Forschungshefte, ser.
, 490: 89
Type genus: ^Maoraxis Bändel, Gründel &
Maxwell, 2000
Marconiinae Schileyko, 2000 [December]
Reference: Treatise on Recent terrestrial pulmonale
molluscs. Part 6: 828
Type genus: Márcenla Bourguignat, 1889
MARGARmNAE StoNczka, 1868 [1 October]
Reference: Memoirs of the Geological Survey
of India. Palaeontologia Indica. Cretaceous
Fauna of Southern India, Vol. 2, Parts 7-10:
367
Type genus: Margarita Leach, 1819
Remarks: Invalid: type genus a junior homonym
of Margarita Leach, 1814 [Bivalvia].
MARGARmNAE Thiele, 1924 [February]
Reference: Mitteilungen aus dem Zoologischen
Museum in Berlin, 1 1 (1 ): 67
Type genus: Margantes Gray, 1847
Remarks: Homonym and synonym of Marga-
ritinae Stoliczka, 1868, and homonym of
Margaritidae Blainville, 1824, based on Margarita
Leach, 1814 [Bivalvia]. Thiele was the