maastrichta
maastrichtica
maastrichtiense
maastrichtiensis
machaeroides
machaerophorum
macmurdoense
macmurdoensis
macrocephala
macrocephalum
macrocysta
macrocystum
macrogranulata
macrogranulum
macroplicata
macropyla
macroreticulata
macrotubulum
maculata
maculatum
maculatus
madura
madurense
madurensis
maestrichtiensis
magdalium
magna
magnaiensis
magnarmatum
magneticum
magnifica
magnificum
magnoides
magnoserrata
magnoserratum
magnoserratus
magnum
maisensis
majae
major
majus
majusculum
makropterum
makropterus
mala
mallajoharensis
malleofera
malleoferum
malmica
malum
mamellatum
mamillifera
mamilliferum
mammillata
mamounia
manicata
manicatum
manifesta
manipulatum
mantellii
manumcooksonii
manumii
maranhense
maranhensis
margarethae
margarita
margaritifera
margaritiferum
marginata
marginatum
margostriata
marheineckei
mariae
mariannae
marieae
marina
marinum
markovae
marsupium
marthae
martianum
martonensis
maslinense
maslinensis
maslovii
masureae
matyjae
maubeugii
maugaad
mauthei
maxicavernum
maxima
maxwellii
mayi
mazaganense
mazaganensis
mcintyrei
mcnightii
mcwhaei
meandriforme
meckelfeldensis
mecsekense
mecsekensis
medcalfii
mediterranea
mediterraneense
mediterraneum
medusae
medusettiformis
medusoides
megalithica
meghalayense
melloi
membranacea
membranaceum
membranaceus
membranea
membraniferum
membranigerum
membraniphora
membraniphorum
membranispinus
membranoidea
membranoidium
membranoperforata
membranosa
membranosus
menendezii
mensula
mentitum
mesa
meson
mespilana
mespilanum
metaelliptica
mica
michaelii
michoudii
micibaculata
micirugis
micirugosa
micracantha
micracanthum
microarma
microarmum
microceras
microceratum
microciliata
microcysta
microcystum
microechinatum
microfenestrata
microfenestratum
microfurcatum
microgranula
microgranulata
microgranulatum
microgranulosa
microgranulosum
microornata
micropapillata
microperforata
micropoda
micropodum
micropunctatum
microreticulata
microreticulatum
microrobusta
microrobustum
microscabratum
microspinosa
microspinosum
microtriaina
microtriainum
microverrucosa
microverrucosum
mikirii
millioudii
milneri
mineralosum
miniaperta
minima
minimum
minor
minqiaoense
minus
minuscula
minusculum
minuta
minutiornatum
minutissima
minutum
miocenica
miocenicum
mirabile
mirabilis
mirifica
miscella
misolensis
missilis
misurinae
mitra
mitratum
mixtispinosum
moderna
modesta
modica
modicum
mojsisovicsii
molesta
molodovense
moluccana
mombasaensis
monacantha
monacanthum
monasteriense
monilifera
moniliforme
monilis
monmouthensis
monocarinatum
monoceras
monoculatus
monoheuriskos
monstruosa
monstruosum
montanaense
montanaensis
monteilii
montgomeryi
moorbergense
moraviensis
moretii
morganii
morgenrothii
mosaica
mosaicum
muderongense
muderongensis
muelleri
muendensis
multibrevis
multibrevum
multicava
multicornuta
multicornutum
multifibrata
multifurcata
multifurcatum
multifurcillatum
multiperforata
multipilosum
multiplexum
multipora
multispina
multispinatum
multispinosa
multispinosum
multispinum
multistrata
multivirgatum
munda
munu
muriciforme
muriciformis
murochoratum
murus
musculopsis
mutabile
mutabilis
muticum
mutinense
mutinensis
mutterlosei
myalupense
myalupensis
myriatrichum