| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Sysoievia
Taxonomy
Sysoievia was named by Marek et al. (1997). Its type is Sysoievia exilis.
It was assigned to Orthothecida by Marek et al. (1997).
It was assigned to Orthothecida by Marek et al. (1997).
Species
S. exilis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1997 | Sysoievia Marek et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. Marek et al. 1997 | Orthothecid having orthoconic conch with semicircular to lenticular dorsal outline, venter flat or with slight convexity creating suboval transverse shape; lateral edges strongly rounded; operculum with butterflylike cardinal processes with distal portion unattached to interior surface of operculum. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Hendy et al. 2009 | |||||