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Cyrtonellidae
Taxonomy
Cyrtonellidae was named by Knight and Yochelson (1958).
It was assigned to Cyrtonellida by Starobogatov (1970); and to Cyrtonellacea by Knight and Yochelson (1960) and Wahlman (1992).
It was assigned to Cyrtonellida by Starobogatov (1970); and to Cyrtonellacea by Knight and Yochelson (1960) and Wahlman (1992).
Subtaxa
Synonyms
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Synonymy list
Year | Name and author |
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1958 | Cyrtonellidae Knight and Yochelson |
1960 | Cyrtonellidae Knight and Yochelson p. 80 |
1964 | Isospiridae Wängberg-Eriksson |
1970 | Cyrtonellidae Starobogatov p. 300 |
1988 | Isospiridae Ponder and Warén p. 300 |
1992 | Cyrtonellidae Wahlman |
2005 | Isospiridae Bouchet et al. p. 242 |
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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. †Cyrtonellidae Knight and Yochelson 1958
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G. †Isospira Koken 1897
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†Isospira bucanioides Koken 1897
†Isospira huttoni Reed 1921
†Isospira lepida Perner 1903
†Isospira nautilina Koken and Perner 1925
†Isospira reinwaldti Öpik 1930
†Isospira reticulata Wängberg-Eriksson 1964
Invalid names: Isospiridae Wängberg-Eriksson 1964 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class | |||||
Reference: Hendy et al. 2009 |
Age range: base of the Middle Ordovician to the top of the Cazenovian or 470.00000 to 383.70000 Ma
Collections (16 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Middle Ordovician | USA (Tennessee) | Cyrtonella sp. (319) | |
Caradoc | USA (Virginia) | Cyrtonella sp. (326) | |
Vormsi | Estonia (Harju) | Isospira bucanioides (156588) | |
Vormsi | Estonia (Lääne) | Isospira bucanioides (87307) | |
Pusgillian | United Kingdom (Scotland) | Isospira huttoni (73133) | |
Pirgu - Porkuni | Sweden (Dalarne) | Isospira reticulata (73407) | |
Gorstian | Czech Republic (Hlavni města Praha) | Isospira lepida (104940) | |
Cazenovian | USA (New York) | Cyrtonella mitella (69460 69461 69462 69463 69465) | |
Givetian | USA (New York) | Cyrtolites mitella (155419) Cyrtonella sp. (89705 89791 89886) |