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Downiesphaeridium
General
Description
Stratigraphy
Literature
Notes
Species
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Age range (in million years)
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Name
Publication
aciculare
Islam, M.A. (1993)
armatum
Islam, M.A. (1993)
bergmannii
Quattrocchio, M.E. and Sarjeant, W.A.S. (2003)
bulbum
Williams, G.L., Lentin, J.K. and Fensome, R.A., (1998)
flexuosum
Islam, M.A. (1993)
iaculigerum
Williams, G.L., Lentin, J.K. and Fensome, R.A., (1998)
multispinosum
Fauconnier, D and Masure, E. (2004)
polyacanthum
Fauconnier, D and Masure, E. (2004)
polytrichum
Islam, M.A. (1993)
sarmentum
Fauconnier, D and Masure, E. (2004)
spinulastrum
Islam, M.A. (1993)
tribuliferum
Fauconnier, D and Masure, E. (2004)
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