Species
Pachysphaeridium mochtiense (Górka, 1969) emend. Ribecai et Tongiorgi, 1999
Synonymy list
1969     Baltisphaeridium mochtiensis — Górka , pp. 43-44, fig. 11:1; 12:1
1971     Goniosphaeridium mochtiensis (Górka, 1969) n. comb. — Kjellström , pp. 26, fig. 16
1976     Goniosphaeridium mochtiensis (Górka, 1969) — Eisenack , pp. 196, fig. 5:2-8; 6:1
1976     Goniosphaeridium mochtiensis (Górka, 1969) n. comb. — Kjellström , pp. 30, fig. 25
1991     Goniosphaeridium mochtiensis (Gorka) Kjellström 1971 — Uutela & Tynni , pp. 65, fig. 12:121
2023     Pachysphaeridium mochtiense (Górka 1969) Ribecai & Tongiorgi 1999 — Rubinstein & Vaida , fig. 10L
Selection of related publications
Uutela, A., Tynni, R. 1991. Ordovician acritarchs from the Rapla borehole, Estonia.  Geological Survey of Finland. Bulletin   353,      1-135.
Kjellström, G. 1971. Middle Ordovician microplankton from the Grötlingbo borehole no. 1 in Gotland, Sweden.  Sveriges Geologiska Undersökning   669,      5-35.
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Classification
| Organism group | Biota | 
| Protista | |
| Acritarcha | |
| Genus | Pachysphaeridium | 
| Species | christianii | 
| mochtiense | |
| pachyconcha | |
| robustum | 
References based on distribution
- Uutela & Tynni, 1991 Rapla borehole 176 - 184 Kunda Stage
- Kjellström, 1971b Grötlingbo 1 borehole, Gotland Uhaku Stage