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Zygospira
Taxonomy
Zygospira was named by Hall (1862).
It was assigned to Atrypidae by Raymond (1911), Oraspold (1956) and Macomber (1970); to Zygospirinae by Howe (1988); to Anazyginae by Williams et al. (2002); and to Atrypida by Sepkoski (2002).
It was assigned to Atrypidae by Raymond (1911), Oraspold (1956) and Macomber (1970); to Zygospirinae by Howe (1988); to Anazyginae by Williams et al. (2002); and to Atrypida by Sepkoski (2002).
Species
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.
G. †Zygospira Hall 1862
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†Zygospira deflecta Hall 1847
†Zygospira fallax Marek and Havlíček 1967
†Zygospira gutta Oraspold 1956
†Zygospira kentuckiensis Hall and Clarke 1895
†Zygospira lebanonensis Cooper 1956
†Zygospira matutina Cooper 1956
†Zygospira meafordensis Foerste 1924
†Zygospira modesta Hall 1847
†Zygospira resupinata Wang 1949
†Zygospira resupinata multicostata Howe 1965
†Zygospira sulcata Howe 1965
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Hendy 2009, Nesnidal et al. 2013 | |||||
Age range: base of the Middle Ordovician to the top of the Juuru or 470.00000 to 439.00000 Ma
Collections (947 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ordovician | USA (Ohio) | Z. modesta (77814) | |
| Middle Ordovician | USA (Kentucky) | Z. modesta (10758) Z. sp. (10745 10757) | |
| Middle Ordovician | USA (New York) | Z. sp. (334 405) | |
| Middle Ordovician | USA (Virginia) | Z. sp. (6992) | |
| Whiterockian | USA (California) | Z. sp. (104345 104347) | |
| Middle Ordovician - Late/Upper Ordovician | USA (Kentucky) | Z. sp. (10720 10746) | |
| Middle Ordovician - Late/Upper Ordovician | Canada (Nunavut) | Z. sp. (101977) | |
| Costonian | United Kingdom (Shropshire) | Z. sp. (45278) | |
| Soudleyan - Marshbrookian | Norway (Oslo) | Z. sp. (3252) | |
| Soudleyan - Marshbrookian | United Kingdom (England) | Z. sp. (3654) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Hirnantian | China (ZheJiang) | Z. sp. (7775) | |
| Hirnantian | Norway (Oslo-Asker Dist.) | Z. sp. (441) | |
| Hirnantian | United Kingdom (Wales) | Z. sp. (8392 8405) | |
| Juuru | Estonia | Z. aprinis (206881) | |
| Juuru | Estonia (Rapla) | Z. aprinis (206915) | |
| Juuru | Estonia (Hiiu) | Z. aprinis (193616 206927) | |
| Llandovery | China (Guizhou) | Z. sp. (25749) | |
| Llandovery | Canada (Québec) | Z. sp. (24538) | |
| Llandovery | Russian Federation (Siberia) | Z. gracilis, Z. planoconvexa (206317) | |
| Raikkula | Estonia (Hiiu) | Z. aprinis (195422) | |