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Impagidinium
General
Description
Stratigraphy
Literature
Notes
Species
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Name
Original Description
acanthosphaera
Sarjeant, W.A.S. (1961a)
aculeatum
Wall, D. (1967)
agremon
Willumsen, P.S. (2011)
alectrolophum
Sarjeant, W.A.S. (1966b)
aliferum
Mudie, P.J. (1987)
ambiguiforme
Dodekova, L. (1994)
ampullacea
Yu Jingxian (1982)
ancoralium
Mantle, D.J., (2005)
angulata
Kumar, A. (1987a)
angustivela
Deflandre, G. and Cookson, I.C. (1955)
antecarcerem
De Verteuil, L. and Norris, G. (1996a)
apotomocerastes
Sarjeant, W.A.S. (1972)
aquitanicum
Deunff, J. (1961a)
arachnion
De Verteuil, L. and Norris, G. (1996a)
ariadnae
Norris, G. (1986)
aspera
Dodekova, L. (1990)
aspinatum
Cookson, I.C. and Eisenack, A. (1974)
assamicum
Sah, S.C.D., Kar, R.K. and Singh, R.Y. (1970)
attadalense
Cookson, I.C. and Eisenack, A. (1982)
australis
Pöthe de Baldis, E.D. (1966)
bacatum
Londeix, L., Benzakour, M. and De Vernal, A. (1992)
bacculatum
Baltes, N. (1971)
bamburiensis
Jiang, Q., Mungai, M.W., Downie, C. and Neves, R. (1992)
bellunoensis
Iakovleva, A.I. (2025)
biforme
Wiesner, H. (1936)
borealis
Brideaux, W.W. and Fisher, M.J. (1976)
borgerholtense
Louwye, S. (2001)
breviatum
Morgenroth, P. (1966a)
brevicornutum
Herngreen, G.F.W., Kerstholt, S.J. and Munsterman, D.K. (2000)
caecopapillatum
Prössl, K.F. (1992b)
californiense
Damassa, S.P. (1979a)
calvum
Tasch, P. (1964)
cambayense
Varma, C.P. and Dangwal, A.K. (1964)
campoense
Caro, Y. (1973)
cantabrigiense
De Schepper, S. and Head, M.J., (2008b)
cantrellii
Sarjeant, W.A.S. (1972)
caspienense
Marret, F., Leroy, S., Chalié, F. and Gasse, F. (2004)
cassiculus
Wilson, G.J. (1988)
cavea
Willumsen, P.S. (2011)
celineae
Jan du Chêne, R. (1988)
cezare
De Vernal, A., Goyette, C., and Rodrigues, C. G. (1989)
chiemgoviensis
Kirsch, K.-H. (1991)
chonetum
Xu Jinli (1987)
circulare
Cookson, I.C. and Eisenack, A. (1971)
circumsutum
Morgenroth, P. (1966b)
clavulum
Davey, R.J. (1969a)
combibaculum
Song Zhichen, Guan Xueting, Li Zengrui, Zheng Yahui, Wang Weiming and Hu Zhonghen (1985)
commune
He Chengquan, Zhu Shenzhao and Jin Guangxing (1989)
coninckii
Burger, D. (1980a)
cornutum
Matsuoka, K. and Bujak, J.P. (1988)
cornutum
Cookson, I.C. and Eisenack, A. (1962b)
crassimuratum
Wilson, G.J. (1988)
crinitum
Davey, R.J. (1969a)
cristatum
May, F.E. (1980)
crouchiae
Willumsen, P.S. (2011)
curvocervicata
Tasch, P. (1964)
cypraea
Ioannides, N.S., Stavrinos, G.N and Downie, C. (1977)
dabendorfense
Alberti, G. (1961)
deflandrei
Gruas-Cavagnetto, C. (1968)
delicatum
Kar, R.K. (1985)
delicatum
Davey, R.J. (1969a)
denticulatum
Alberti, G. (1961)
detroitense
Zorzi, C. et al. (2019)
diaphanum
Zorzi, C. et al. (2019)
dispertitum
Cookson, I.C. and Eisenack, A. (1965a)
distincta
Jain, K.P. and Millepied, P. (1975)
diversum
Duxbury, S. (2001)
echinata
Duxbury, S. (1983)
eirikianum
Head, M.J., Norris, G. and Mudie, P.J. (1989b)
elegans
Cookson, I.C. and Eisenack, A. (1965a)
ellipsoideum
Deflandre, G. (1936b)
elongatum
Riding, J.B. and Ilyina, V.I. (1998)
elongatum
Schreck, M., Matthiessen, J. and Head, M.J., (2012)
eocenicum
Cookson, I.C. and Eisenack, A. (1965a)
epidoma
Matsuoka, K. (1987)
erectum
Manum, S. and Cookson, I.C. (1964)
erregulensis
Filatoff, J. (1975)
eugubinum
Biffi, U. and Manum, S.B. (1988)
eurypylum
Manum, S. and Cookson, I.C. (1964)
fenesepta
Mantle, D.J. (2009a)
fenestroseptatum
Head, M.J., Norris, G. and Mudie, P.J. (1989b)
flagellichnia
Schioler, P. (1993)
foratum
Dodekova, L. (1994)
fragile
Norvick, M.S. and Burger, D. (1976)
gibberosa
Jiabo (1978)
gibrense
Michoux, D. (1985)
gliwicense
Mackó, S. (1957)
globosum
Sütö-Szentai, M. (1985)
globosum
Olaru, L.V. (1978a)
globosum
Davey, R.J. (1970)
gracilium
Shaw Chenglong (1999b)
grande
Salujha, S.K., Srivastava, N.C. and Rawat, M.S. (1969)
granulatum
Oleinik, E.S. (1975)
granulatum
Morgenroth, P. (1966a)
granulosum
Zheng Yahui and He Chengquan (1984)
granulosum
Jain, K.P. and Millepied, P. (1975)
gymnosuturum
Smith, S.W. (1992)
hannahii
Willumsen, P.S. (2011)
hemmoorensis
Marheinecke, U. (1992)
hillii
Merril, J.A. (1895)
horridum
Below, R. (1987b)
huanghuaense
Jiabo (1978)
humile
Xu Jinli (1987)
hyalodermopse
Cookson, I.C. and Eisenack, A. (1958)
hyalodermum
Deflandre, G. (1939b)
hymenohystrichum
Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
hyperxanthum
Vozzhennikova, T.F. (1963)
hypornatum
Prauss, M. (1989)
illustrans
Wetzel, O. (1933a)
inaequalis
Wall, D., Dale, B. and Harada, K. (1973)
indica
Jain, K.P., Kumar, P. and Maheshwari, H.K. (1982)
inflatum
Harker, S.D., Sarjeant, W.A.S. and Caldwell, W.G.E. (1990)
inflatum
Eisenack, A. and Cookson, I. (1960)
inornatum
Batten, D.J. and Lister, J.K. (1988)
insuetum
Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
japonicum
Matsuoka, K. (1983b)
jiangsuense
Zheng Yahui and He Chengquan (1984)
junctum
Bailey, D.A. and Loy, A. (1997)
kansanum
Tasch, P. (1964)
kashiense
He Chengquan (1991)
lata
Yu Jingxian and Zhang Wangping (1980)
lateraliprocessum
Srivastava, N.C. and Banerjee, D. (1969)
laticaudata
Vozzhennikova, T.F. (1967)
maculatum
Cookson, I.C. and Eisenack, A. (1961b)
maghribensis
Slimani, H., Louwye, S., Toufiq, A., Verniers, J. and de Coninck, J., (2008)
makropterum
Cookson, I.C. and Eisenack, A. (1982)
manumii
Matsuoka, K. and Bujak, J.P. (1988)
margaritiferum
Cookson, I.C. and Eisenack, A. (1960a)
marina
Kufferath, H. (1950)
megagranum
Head, M.J. and Westphal, H., (1999)
membranaceum
Jiabo (1978)
micropunctatum
Jain, K.P. and Millepied, P. (1975)
microreticulata
Jiabo (1978)
mineralosum
Varma, C.P. and Dangwal, A.K. (1964)
minima
Yu Jingxian (1982)
minus
Biffi, U. and Manum, S.B. (1988)
minuta
De Coninck, J. (1969)
moderna
Kufferath, H. (1950)
modicum
Brideaux, W.W. and McIntyre, D.J. (1975)
modicum ssp. denticulatum
Brideaux, W.W. (1977)
modicum ssp. modicum
Brideaux, W.W. and McIntyre, D.J. (1975)
monoheuriskos
Gitmez, G.U. and Sarjeant, W.A.S. (1972)
mosaicum
Downie, C. (1957)
multicornutum
Kimyai, A. (1966)
multiplex
Wall, D. and Dale, B. (1968a)
muriciformis
Conrad, W. (1941)
nannotrix
Deflandre, G. (1939b)
nanus
Wetzel, O. (1933b)
neophytensum
Ioannides, N.S., Stavrinos, G.N and Downie, C. (1977)
nuda
Nagy, E. (1969)
obesum
Sütö-Szentai, M. (1982a)
oblongum
Yu Jingxian and Zhang Wangping (1980)
obscurum
Vieira, M., Casas-Gallego, M., Mahdi, S., Fenton, J. (2020)
oligacanthum
Wetzel, W. (1952)
orbifera
Klement, K.W. (1960)
orchiesense
De Coninck, J. (1975)
ordocaviopse
Iosifova, K. E. (1996)
ovalis
Cookson, I.C. and Eisenack, A. (1974)
ovatum
Horowitz, A. (1975)
oviforme
He Chengquan, Zhu Shenzhao and Jin Guangxing (1989)
ovum
Sah, S.C.D., Kar, R.K. and Singh, R.Y. (1970)
pallidum
Bujak, J.P. (1984)
pannosa
Duxbury, S. (1980)
paracostatum
Cookson, I.C. and Eisenack, A. (1974)
paradoxum
Wall, D. (1967)
paradoxum ssp. granulatum
Mao Shaozhi (1989)
paradoxum ssp. paradoxum
Wall, D. (1967)
parvireticulatum
Wilson, G.J. (1988)
parvum
Michael, E. (1964)
parvum
Harland, R. (1973)
patulum
Wall, D. (1967)
paucifurcatum
Cookson, I.C. and Eisenack, A. (1961b)
pecsvaradense
Sütö-Szentai, M. (1982a)
pengchiahsum
Shaw Chenglong (1999b)
perplexum
Varma, C.P. and Dangwal, A.K. (1964)
picena
Biffi, U. and Manum, S.B. (1988)
pilum
Gocht, H. (1959)
pirus
Deunff, J. (1959)
placitum
Drugg, W.S. and Loeblich jr, A.R. (1967)
plagatum
Dodekova, L. (1994)
plicatum
Versteegh, G.J.M. and Zevenboom, D. (1995)
polyozum
Brosius, M. (1963)
polytrichum
Valensi, L. (1947)
primaevum
Zheng Yahui and He Chengquan (1984)
pseudochytroeides
Below, R. (1987a)
psilata
Jain, K.P. and Millepied, P. (1975)
pterotum
Cookson, I.C. and Eisenack, A. (1958)
punctatum
Cookson, I.C. and Eisenack, A. (1971)
rarispinosum
Cookson, I.C. and Eisenack, A. (1971)
raritanianum
Kimyai, A. (1966)
reductum
Stover, L.E. and Helby, R. (1987c)
reteinvolvatum
Below, R. (1987b)
reticulatum
Nagy, E. (1969)
retiola
Dodekova, L. (1994)
rhomboidale
He Chengquan (1991)
rhomboides
Wetzel, O. (1933a)
rhombovale
Cookson, I.C. and Eisenack, A. (1970a)
rigidaseptatum
Slimani, H. (1994)
rioultii
Sarjeant, W.A.S. (1965)
robustum
Michael, E. (1964)
rostrata
Yu Jingxian (1982)
rugosum
Zheng Yahui and He Chengquan (1984)
sahii
Lentin, J.K. and Williams, G.L. (1993)
sarmentum
Davey, R.J. (1979b)
scabrosum
Slimani, H. (1994)
schizokeras
De Coninck, J. (1975)
scrobiculata
Deflandre, G. and Cookson, I.C. (1955)
sekadensis
Slimani, H. et al. (2021)
semicirculata
Morgenroth, P. (1966b)
senii
Srivastava, N.C. and Banerjee, D. (1969)
sergipense
Regali, M.S.P., Uesugui, N. and Santos, Y.S. (1974)
setcheyense
Sarjeant, W.A.S. (1976c)
shangsicum
He Chengquan (1984b)
simplex
Harland, R. (1979b)
simplex
Mao Shaozhi (1989)
simplicium
Cookson, I.C. and Eisenack, A. (1961b)
simpulum
Islam, M.A. (1983a)
sinense
He Chengquan (1991)
solidum
Versteegh, G.J.M. and Zevenboom, D. (1995)
sphaericum
Wall, D. (1967)
sphaericum
Horowitz, A. (1975)
spinatum
He Chengquan (1991)
spiniferum
Cookson, I.C. and Eisenack, A. (1982)
spinipansatum
Merril, J.A. (1895)
spinulosum
He Chengquan (1991)
spiralisetum
De Wit, R. (1943)
spongianum
Sütö-Szentai, M. (1985)
strialatum
Wall, D. (1967)
striatum
He Chengquan (1991)
strigosa
Mantle, D.J. (2009b)
subconicoides
Lejeune-Carpentier, M. (1942)
taiwanianum
Shaw Chenglong (1999b)
tasmanica
Cookson, I.C. and Eisenack, A. (1982)
tectum
Biffi, U. and Manum, S.B. (1988)
tenella
Morgenroth, P. (1968)
tenera
De Coninck, J. (1975)
tenue
Schumacker-Lambry, J. (1978)
tenuicornutum
Cookson, I.C. and Eisenack, A. (1962b)
tenuifilum
Cookson, I.C. and Eisenack, A. (1982)
torsium
Stover, L.E. and Hardenbol, J. (1994)
trabeculosum
Singh, Ch. (1983)
tricornuta
Riding, J.B., Walton, W. and Shaw, D. (1991)
triquetra
Riding, J.B., Walton, W. and Shaw, D. (1991)
tuberculatum
Vasilyeva, O.N. (2024)
tubulatum
Menéndez, C.A. (1965)
turnhoutensis
Slimani, H. (1994)
variabile
He Chengquan (1991)
variaseptum
Marret, F. and de Vernal, A. (1997)
variospinum
Davey, R.J. (1969a)
varispinosa
Brenner, W. (1988)
velorum
Bujak, J.P. (1984)
veneziaense
Iakovleva, A.I. (2025)
verbinense
Deflandre, G. (1946a)
verrucosum
Brideaux, W.W. and McIntyre, D.J. (1975)
victorianum
Cookson, I.C. and Eisenack, A. (1965a)
villosa
Tasch, P. (1964)
vitrea
Duxbury, S. (1983)
wardii
Iakovleva, A.I., Heilmann-Clausen, C. (2021)
wetzelii
Morgenroth, P. (1966a)
wetzelii
Cookson, I.C. and Eisenack, A. (1982)
whitei
Sarjeant, W.A.S. (1966b)
wrennii
McMinn, A. (1992a)
wuqiaense
He Chengquan (1991)
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