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Anazygidae
Taxonomy
Anazygidae was named by Davidson (1883). Its type is Anazyga.
It was assigned to Anazygoidea by Williams et al. (2002).
It was assigned to Anazygoidea by Williams et al. (2002).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1883 | Anazygidae Davidson |
| 2002 | Anazygidae Williams et al. p. 1440 |
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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.
Fm. †Anazygidae Davidson 1883
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Subfm. †Anazyginae Davidson 1883
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G. †Anazyga Davidson 1882
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†Anazyga aequivalvis Twenhofel 1928
†Anazyga orbis Reed 1917
†Anazyga recurvirostra Hall 1847
Invalid names: Hallina [synonym], Nuria [synonym]
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
Subfm. †Catazyginae Copper 1977
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G. †Catazyga Hall and Clarke 1893
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†Catazyga anticostiensis Billings 1862
†Catazyga arcana Williams 1962
†Catazyga cartieri Cooper and Kindle 1936
†Catazyga headi Billings 1862
†Catazyga hicksi Reed 1905
Invalid names: Eonalivkinia [synonym], Salairella Severgina 1984 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013, Meyer et al. 2009 | |||||
Collections (1249 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ordovician | USA (Ohio) | Zygospira modesta (77814) | |
| Ordovician | USA (Tennessee) | Anazyga sp. (1959) | |
| Middle Ordovician | USA (Virginia) | Zygospira sp. (6992) | |
| Middle Ordovician | USA (Kentucky) | Zygospira modesta (10758) Zygospira sp. (10745 10757) | |
| Middle Ordovician | USA (New York) | Anazyga sp. (333 430) Anazyga sp., Zygospira sp. (334) Zygospira sp. (405) | |
| Whiterockian | USA (California) | Zygospira sp. (104345 104347) | |
| Middle Ordovician - Late/Upper Ordovician | Canada (Nunavut) | Zygospira sp. (101977) | |
| Middle Ordovician - Late/Upper Ordovician | USA (Kentucky) | Zygospira sp. (10720 10746) | |
| Llanvirn | China (QingHai) | Catazyga sp. (8683) | |
| Llandeilo | China (GanSu) | Catazyga sp. (8578) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Wenlock | Russian Federation | Tuvaella rackovskii (24777 24778 24780) | |
| Wenlock | Mongolia (northwestern Mongolia) | Tuvaella planidorsata (13190) | |
| Wenlock | USA (California) | Zygatrypa stenoparva (226732) | |
| Wenlock - Ludlow | China (Heilongjiang) | Tuvaella gigantea, Tuvaella rackovskii, Tuvaella minuta (27886) | |
| Wenlock - Ludlow | Mongolia | Tuvaella gigantea (41061) | |
| Homerian | Canada (Northwest Territories) | Zygatrypa paupera (497) | |
| Homerian - Jaagarahu | Lithuania | Pentlandella tenuistriata (192583) | |
| Ludlow | China (Xinjiang) | Tuvaella gigantea (25865) Tuvaella gigantea, Tuvaella barkolensis (27760) | |
| Ludlow | Mongolia | Tuvaella gigantea (41062) | |
| Ludlow - Pridoli | Russian Federation | Tuvaella gigantea (24781 24782 24784) | |