Silva Center for Phycological Documentation: Index Nominum Algarum

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Indexes (very large files) to all taxa:

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HELOSPHAERIDIUM Lister
Acritarcha
Palaeontogr. Soc. [London] Publ. 528: 76. 1970. (E)
T. See image Helosphaeridium clavispinulosum Lister 1970
[+ Helosphaeridium pseudodictyum, H. latispinosum]

Retrieve all HELOSPHAERIDIUM
Get original family assignment from Index Nominum Genericorum
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