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Downiesphaeridium
General
Description
Stratigraphy
Literature
Notes
Species
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Name
Original Description
tribuliferum
Sarjeant, W.A.S. (1962a)
spinulastrum
Islam, M.A. (1983b)
sarmentum
Stancliffe, R.P.W. (1991)
polytrichum
Valensi, L. (1947)
polyacanthum
Gitmez, G.U. (1970)
obtusum
Duxbury, S. (2024)
multispinosum
Singh, Ch. (1964)
iaculigerum
Klement, K.W. (1960)
flexuosum
Davey, R.J., Downie, C., Sarjeant, W.A.S. and Williams, G.L. (1966)
chems
Below, R. (1982c)
bulbum
Yu Jingxian (1989)
bergmannii
Archangelsky, S. (1969a)
armatum
Deflandre, G. (1937b)
aciculare
Davey, R.J. (1969a)
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