Acritax - Acritax_JWIP - M Acritax - Acritax_JWIP - M


Folder trail: Acritax_JWIP -> M
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This catalog consists of scans of cards from the "John William Index of Palaeopalynology" compiled by John Williams between 1971 and 2010 - see also this page.
The cards inclued here are only those for the acritarchs, they are sorted alphabetically for simple browsing. You can also use search boxes at the top & bottom of the page to find specific taxa
There are PDF (higher quality) and jpeg (faster opening) copies of the cards, the content of them is identical

M has 97 sub-taxa these are grouped in 3 pages
1 Macrop :: 2 Melasm :: 3 Morani

(4 sub-taxa)
Melasmatosphaera conjuncta
Melasmatosphaera magna
Melasmatosphaera media
Melasmatosphaera parva


(1 sub-taxa)
Melicerion poikilon


(8 sub-taxa)
Melikeriopalla amydra
Melikeriopalla cataphracta
Melikeriopalla fissura
Melikeriopalla fistulosa
Melikeriopalla pustula
Melikeriopalla sp. 1 Le Herisse 2000
Melikeriopalla venulosa
Melikeriopalla wenlockia


(1 sub-taxa)
Membranites minutus


(2 sub-taxa)
Membranolimbus limbatus
Membranolimbus triangulatus


(3 sub-taxa)
Membranosphaera bulluliniformis
Membranosphaera traingularis
Membranosphaera tuberculata


(2 sub-taxa)
Membrosphaera dividata
Membrosphaera spongiosa


(2 sub-taxa)
Menneria roblotae
Menneria species


(1 sub-taxa)
Meridinium meridianum


(2 sub-taxa)
Mesonactus imparilis
Mesonactus luoyingensis


(5 sub-taxa)
Metaleiofusa arquata
Metaleiofusa bispinosa
Metaleiofusa compressa
Metaleiofusa diagonalis
Metaleiofusa grandis


(1 sub-taxa)
Metaridium solidispinum


(1 sub-taxa)
Miaplacidus heteromorphicus


(422 sub-taxa)
Micrhystridium abnormisum
Micrhystridium acanthaceum
Micrhystridium accretum
Micrhystridium acerbum
Micrhystridium acinaciformum
Micrhystridium aculeatum
Micrhystridium acum
Micrhystridium acuminosum
Micrhystridium adductum
Micrhystridium adligans
Micrhystridium akrochordum
Micrhystridium albertensis
Micrhystridium allioteaui
Micrhystridium alperni
Micrhystridium alteroides
Micrhystridium alveospinum
Micrhystridium ambiguum
Micrhystridium ampliatum
Micrhystridium andamanicus
Micrhystridium andrewsi
Micrhystridium angustum
Micrhystridium ankyleton
Micrhystridium apiculatum
Micrhystridium arachnoides
Micrhystridium aremoricanum
Micrhystridium areolatum
Micrhystridium argentinum
Micrhystridium ariakense
Micrhystridium asagaiense
Micrhystridium asper
Micrhystridium assuetum
Micrhystridium aster
Micrhystridium bacilliferum
Micrhystridium baculiferum
Micrhystridium bahamense
Micrhystridium baldisiae
Micrhystridium balmei
Micrhystridium barbatum
Micrhystridium bifidum
Micrhystridium bifurcatum
Micrhystridium bigoti
Micrhystridium bimodulentum
Micrhystridium biornatum
Micrhystridium bistchoensis
Micrhystridium breve
Micrhystridium breviacanthum
Micrhystridium breviciliatum
Micrhystridium brevicomatum
Micrhystridium brevicornum
Micrhystridium breviradiatum
Micrhystridium brevispinosum
Micrhystridium bulbiferum
Micrhystridium bullosum
Micrhystridium calyptriformis
Micrhystridium campoae
Micrhystridium camptum
Micrhystridium canningia
Micrhystridium cannosphaeropsoides
Micrhystridium capillare
Micrhystridium capillatum
Micrhystridium castaninum
Micrhystridium castanoideum
Micrhystridium celsum
Micrhystridium cernuum
Micrhystridium certum
Micrhystridium chakor
Micrhystridium chaltoni
Micrhystridium charakion
Micrhystridium chiggerum
Micrhystridium chondrosum
Micrhystridium ciliatum
Micrhystridium ciliforme
Micrhystridium cilium
Micrhystridium circulum
Micrhystridium clarkii
Micrhystridium clavatispinum
Micrhystridium clavellense
Micrhystridium claviculorum
Micrhystridium clavum
Micrhystridium cleae
Micrhystridium comatum
Micrhystridium combazii
Micrhystridium cometes
Micrhystridium commosum
Micrhystridium complurispinosum
Micrhystridium conatum
Micrhystridium concinnum
Micrhystridium confusum
Micrhystridium coniferum
Micrhystridium conigerum
Micrhystridium conobrachium
Micrhystridium contractum
Micrhystridium coronatum
Micrhystridium cortracumense
Micrhystridium costatum
Micrhystridium crassiechinatum
Micrhystridium crassimuratum
Micrhystridium crinitum
Micrhystridium crispum
Micrhystridium curvatum
Micrhystridium cylindratum
Micrhystridium dangeardii
Micrhystridium debilispinum
Micrhystridium decollatum
Micrhystridium deconinckii
Micrhystridium deflandrei
Micrhystridium densispinum
Micrhystridium densum
Micrhystridium deunffii
Micrhystridium dictyophorum
Micrhystridium didymum
Micrhystridium digitatum
Micrhystridium diornamentum
Micrhystridium dissimilare
Micrhystridium dunnispinum
Micrhystridium duodeciaster
Micrhystridium duplex
Micrhystridium duvernayensis
Micrhystridium eatonensis
Micrhystridium echinoides
Micrhystridium echinosum
Micrhystridium echinulatum
Micrhystridium ehrenbergi
Micrhystridium ellaensis
Micrhystridium ellipticum
Micrhystridium elongatum
Micrhystridium embergeri
Micrhystridium equispinosum
Micrhystridium erugatum
Micrhystridium escobaides
Micrhystridium eupeplos
Micrhystridium evansii
Micrhystridium exiguum
Micrhystridium exile
Micrhystridium exilissimum
Micrhystridium exilium
Micrhystridium filiatum
Micrhystridium filiferum
Micrhystridium filigerum
Micrhystridium fissile
Micrhystridium flandrianum
Micrhystridium flexibile
Micrhystridium flexipilosum
Micrhystridium flexispinosum
Micrhystridium folliculum
Micrhystridium formosum
Micrhystridium fragile
Micrhystridium frasera
Micrhystridium frumentaceum
Micrhystridium fucosum
Micrhystridium geminatum
Micrhystridium gilsonii
Micrhystridium globosa
Micrhystridium gogensis
Micrhystridium goldwyerense
Micrhystridium gordonense
Micrhystridium gracile
Micrhystridium granocentricum
Micrhystridium granospinosum
Micrhystridium granulatum
Micrhystridium granuliferum
Micrhystridium gregarium
Micrhystridium grosjeani
Micrhystridium guapa
Micrhystridium guizhouense
Micrhystridium hamatum
Micrhystridium harlandii
Micrhystridium helios
Micrhystridium henryi
Micrhystridium heteracanthum
Micrhystridium heterospinosum
Micrhystridium heurcki
Micrhystridium hexagonum
Micrhystridium hirticulum
Micrhystridium horridulum
Micrhystridium hydraferum
Micrhystridium hystricosum
Micrhystridium imitatum
Micrhystridium inaffectilumium
Micrhystridium inaffectum
Micrhystridium incertum
Micrhystridium inconspicuum
Micrhystridium inflatum
Micrhystridium infrequens
Micrhystridium insuetum
Micrhystridium intonsurans
Micrhystridium intromiltum
Micrhystridium inusitatum
Micrhystridium irevikenensis
Micrhystridium jekhowskyi
Micrhystridium jiangsuense
Micrhystridium kaladgiense
Micrhystridium karamurzae
Micrhystridium karrooense
Micrhystridium kashiensis
Micrhystridium keratoides
Micrhystridium koraiense
Micrhystridium kufferathii
Micrhystridium kummelii
Micrhystridium lagynophorum
Micrhystridium lanatum
Micrhystridium lanceolatum
Micrhystridium lanicium
Micrhystridium lappellum
Micrhystridium lappum
Micrhystridium lasnamaegiense
Micrhystridium latviense
Micrhystridium lejeunei
Micrhystridium leptodermum
Micrhystridium leptothrix
Micrhystridium levibrachium
Micrhystridium licroidium
Micrhystridium lobeznum
Micrhystridium longispiniferum
Micrhystridium longispinosum
Micrhystridium longum
Micrhystridium lubomlense
Micrhystridium lucasi
Micrhystridium lucidum
Micrhystridium lui
Micrhystridium lunatum
Micrhystridium lymensis
Micrhystridium maidipingense
Micrhystridium maillieuxii
Micrhystridium malpeinadum
Micrhystridium mambla
Micrhystridium mametii
Micrhystridium mammulatum
Micrhystridium mastigophorum
Micrhystridium medispinosus
Micrhystridium meishucunense
Micrhystridium mendax
Micrhystridium mergaeferum
Micrhystridium micropolygonale
Micrhystridium microreticulatum
Micrhystridium microspinosum
Micrhystridium minimum
Micrhystridium minus
Micrhystridium minutispinum
Micrhystridium minutum
Micrhystridium miserum
Micrhystridium modestus
Micrhystridium morenensis
Micrhystridium multiangulare
Micrhystridium multispinosum
Micrhystridium nannacanthum
Micrhystridium nanodigitatum
Micrhystridium nanum
Micrhystridium nebulosum
Micrhystridium nemuroense
Micrhystridium ninqiangense
Micrhystridium notatum
Micrhystridium obscurum
Micrhystridium obtusum
Micrhystridium oceaniae
Micrhystridium oceanicum
Micrhystridium octospinosum
Micrhystridium oligarifmum
Micrhystridium oligum
Micrhystridium operosum
Micrhystridium ordensis
Micrhystridium ornatum
Micrhystridium ovale
Micrhystridium pachydermum
Micrhystridium pakistanense
Micrhystridium pallidum
Micrhystridium pandum
Micrhystridium papillatum
Micrhystridium paraguaferum
Micrhystridium parainconspicuum
Micrhystridium parinconspicuum
Micrhystridium parveroquesi
Micrhystridium parvidumeti
Micrhystridium parvispinum
Micrhystridium parvulum
Micrhystridium parvum
Micrhystridium pascheri
Micrhystridium pastielsii
Micrhystridium patentissimum
Micrhystridium paucispinum
Micrhystridium paulinae
Micrhystridium pavimentum
Micrhystridium pelagicum
Micrhystridium pellitum
Micrhystridium penkridgensis
Micrhystridium pentagonale
Micrhystridium perleve
Micrhystridium persolatiforme
Micrhystridium picorricum
Micrhystridium piliferum
Micrhystridium pilosiusculum
Micrhystridium piriforme
Micrhystridium pisinnum
Micrhystridium pistillum
Micrhystridium piveteaui
Micrhystridium placophorum
Micrhystridium platformum
Micrhystridium plurispinum
Micrhystridium polorum
Micrhystridium polyedricum
Micrhystridium polygonale
Micrhystridium poratum
Micrhystridium procarinatum
Micrhystridium profusum
Micrhystridium prolixum
Micrhystridium proprium
Micrhystridium protensum
Micrhystridium pseudocoronatum
Micrhystridium pseudozonale
Micrhystridium pumile
Micrhystridium punctatum
Micrhystridium pusillum
Micrhystridium pustulatum
Micrhystridium pyramidispinosum
Micrhystridium quadraticum
Micrhystridium quadricorne
Micrhystridium radians
Micrhystridium radzynicum
Micrhystridium rarifurcatum
Micrhystridium rarispinum
Micrhystridium raspa
Micrhystridium rectangulare
Micrhystridium recurvatum
Micrhystridium reductum
Micrhystridium reflectum
Micrhystridium regulare
Micrhystridium resistens
Micrhystridium reticulatum
Micrhystridium rhopalicum
Micrhystridium rigidum
Micrhystridium robustum
Micrhystridium roquesi
Micrhystridium salopiense
Micrhystridium sannemanni
Micrhystridium sarjeantii
Micrhystridium scutospinum
Micrhystridium sedecimspinosum
Micrhystridium semiapertum
Micrhystridium sericum
Micrhystridium setasessitante
Micrhystridium setulerum
Micrhystridium shinetonensis
Micrhystridium shongjaichangense
Micrhystridium simplex
Micrhystridium singulare
Micrhystridium sinuosum
Micrhystridium sitholeyi
Micrhystridium smedsbiense
Micrhystridium sp. A Heuse 1989b
Micrhystridium sp. A Quattrocchio 1980a
Micrhystridium sp. B Heuse 1989b
Micrhystridium sp. B Quattrocchio 1980a
Micrhystridium spicatum
Micrhystridium spinoglobosum
Micrhystridium spinosum
Micrhystridium spinuliferum
Micrhystridium spp Levy and Harwood 2000
Micrhystridium staplinii
Micrhystridium stellapilosum
Micrhystridium stellatum
Micrhystridium stimuliferum
Micrhystridium stipulatum
Micrhystridium stipulum
Micrhystridium stockmansii
Micrhystridium strulerum
Micrhystridium stylosum
Micrhystridium subbifurcatum
Micrhystridium subcarpaticum
Micrhystridium subgenus Brachiprojectidium
Micrhystridium subgenus Lecithodinium
Micrhystridium subgenus Micrhystridium
Micrhystridium subgenus Microbaculidinium
Micrhystridium subgenus Nannobarbophora
Micrhystridium subgenus Odontothrix
Micrhystridium subrobustum
Micrhystridium subtile
Micrhystridium suemegense
Micrhystridium sydus
Micrhystridium systenoidium
Micrhystridium taeniosum
Micrhystridium taleum
Micrhystridium teichertii
Micrhystridium tenuiramusculosum
Micrhystridium tenuissimum
Micrhystridium tetraxis
Micrhystridium thusui
Micrhystridium toigae
Micrhystridium tonarium
Micrhystridium tornacense
Micrhystridium tornatum
Micrhystridium transitorium
Micrhystridium triassicum
Micrhystridium trigonatum
Micrhystridium tubulatum
Micrhystridium tubulispinosum
Micrhystridium tumultus
Micrhystridium uncinatum
Micrhystridium unilaterale
Micrhystridium valensii
Micrhystridium vanoyei
Micrhystridium variabile
Micrhystridium varians
Micrhystridium varipinnosum
Micrhystridium varispinosum
Micrhystridium veligerum
Micrhystridium venustum
Micrhystridium verber
Micrhystridium vigintispinum
Micrhystridium villosum
Micrhystridium viriosum
Micrhystridium vulgare
Micrhystridium wattonense
Micrhystridium wenlockense
Micrhystridium wepionense
Micrhystridium westphalienum
Micrhystridium wicanderi
Micrhystridium williereae
Micrhystridium xianum
Micrhystridium yonilense
Micrhystridium zalesskyi
Micrhystridium zhuravlevae
Micrhystridium ziquiense


(1 sub-taxa)
Microagglomeratus borealis


(1 sub-taxa)
Microancyratium olecranum


(3 sub-taxa)
Microbaculidinium aster
Microbaculidinium cornutum
Microbaculidinium filiatum


(1 sub-taxa)
Microcircula simplex


(18 sub-taxa)


(1 sub-taxa)
Microcystopsis yaoi


(1 sub-taxa)
Microfasta evansii


(1 sub-taxa)
Micronemaites formosus


(1 sub-taxa)
Microphycus curtus


(1 sub-taxa)
Microptycha minuta


(1 sub-taxa)
Microsphaera faveolata


(1 sub-taxa)
Microsphaeroides miaoheensis


(1 sub-taxa)
Microtaenia granulosa


(1 sub-taxa)
Microvalia spinosa


(1 sub-taxa)
Miniococcus sinensis


(2 sub-taxa)
Minutisphaeridium asperatum
Minutisphaeridium laevigatum


(2 sub-taxa)
Minutissima atava
Minutissima prima


(1 sub-taxa)
Mirificysta lineata


(2 sub-taxa)
Miroedichia lobata
Miroedichia spathulata


(2 sub-taxa)
Mitroporata armata
Mitroporata crassa


(1 sub-taxa)
Monilinema quadratucella


(1 sub-taxa)
Monocrodium mediterraneum


(1 sub-taxa)
Monosozosphaeridium ekmelum


(2 sub-taxa)
Monostiohus cirriformis
Monostiohus guizhouensis


(17 sub-taxa)


(1 sub-taxa)
Montanella beltensis

M has 97 sub-taxa these are grouped in 3 pages
1 Macrop :: 2 Melasm :: 3 Morani

Current identification:


Acritax - Acritax_JWIP - M compiled by John Williams and Brian Pedder

Taxon Search

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Short stable page link: Go to to create a permanent copy of this page - citation notes
Possible link to Algaebase for nomenclatural details: M

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