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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Calvustrigis
Taxonomy
Calvustrigis is a genus. It is not extant.
It was assigned to Spiriferida by Sepkoski (2002); and to Strophopleurinae by Williams et al. (2006).
It was assigned to Spiriferida by Sepkoski (2002); and to Strophopleurinae by Williams et al. (2006).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Calvustrigis Sepkoski |
| 2006 | Calvustrigis Williams et al. p. 1812 |
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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.
G. †Calvustrigis
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: Tournaisian or 358.86000 to 346.70000 Ma
Collections (23 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tournaisian | USA (Iowa) | C. sp. (3309) | |
| Tournaisian | Canada (Alberta) | C. rutherfordi (67238 67239 67240 67241 67242 67243 67244 67245 67246 67248 67249 67252 67254 67256 67258 67262 67264 67275 67276 67286 67288 67336) |