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Sphenotreta
Taxonomy
Sphenotreta is a genus. It is not extant. It is the type genus of Sphenotretidae.
It was assigned to Sphenotretidae by Williams et al. (2002); and to Rhynchonellida by Sepkoski (2002).
It was assigned to Sphenotretidae by Williams et al. (2002); and to Rhynchonellida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Sphenotreta Sepkoski |
| 2002 | Sphenotreta Williams et al. p. 1043 |
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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. †Sphenotreta
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†Sphenotreta acutirostris Hall 1847
†Sphenotreta sulcata Cooper 1956
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: base of the Darriwilian to the top of the Hirnantian or 469.40000 to 443.10000 Ma
Collections (44 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chazyan | USA (Vermont) | Zygospira acutirostris (172202 172203) | |
| Chazyan | USA (New York) | Rhynchonella acutirostris (164475) Zygospira acutirostris (42808 56212 56214 56215 171704 171706 171707 171711 171713 171798 172187 172195 172221 172222 172223 172227 172325 172329 172330 172331 172342 172346) | |
| Chazyan | Canada (Ontario) | Zygospira acutirostris (172204) | |
| Chazyan | Canada (Quebec) | S. sp. (305 307 311) Zygospira acutirostris (172350) | |
| Whiterockian | USA (Nevada) | S. sulcata (104390) | |
| Darriwilian | Russian Federation (Siberia) | S. sp. (9222 9228) | |
| Caradoc | USA (Virginia) | Zygospira acutirostris (33934 33935 33936 33937) | |
| Ashbyan | USA (Virginia) | Zygospira acutirostris (33938 33980 33981 33982 33983 33984) | |
| Hirnantian | United Kingdom (England) | S. sp. (80657) |