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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Grewingkia rustica
Taxonomy
Petraia rustica was named by Billings (1858).
It was recombined as Streptelasma rusticum by Foerste (1924); it was recombined as Helicelasma rusticum by Neuman (1969); it was recombined as Grewingkia rustica by Elias (1981).
It was recombined as Streptelasma rusticum by Foerste (1924); it was recombined as Helicelasma rusticum by Neuman (1969); it was recombined as Grewingkia rustica by Elias (1981).
Sister species lacking formal opinion data
Synonymy list
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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.
†Grewingkia rustica Billings 1858
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class | |||||
Reference: Kiessling 2004 |
Age range: Richmondian or 449.60000 to 445.50000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Richmondian | Canada (Québec) | Grewingkia rustica (192338) |