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Cyrtonellopsis
Taxonomy
Cyrtonellopsis was named by Yochelson (1958) [Sepkoski's age data: O Trem-l O Llvi Sepkoski's reference number: 1,110,1075]. It is not extant.
It was assigned to Cyrtonellidae by Knight and Yochelson (1960) and Starobogatov (1970); to Cyrtolitidae by Runnegar and Jell (1976); and to Cyrtonellida by Sepkoski (2002).
It was assigned to Cyrtonellidae by Knight and Yochelson (1960) and Starobogatov (1970); to Cyrtolitidae by Runnegar and Jell (1976); and to Cyrtonellida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1958 | Cyrtonellopsis Yochelson |
| 1960 | Cyrtonellopsis Knight and Yochelson p. 80 |
| 1970 | Cyrtonellopsis Starobogatov p. 300 |
| 1976 | Cyrtonellopsis Runnegar and Jell p. 118 |
| 2002 | Cyrtonellopsis Sepkoski |
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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. †Cyrtonellopsis Yochelson 1958
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†Cyrtonellopsis huzzahensis Yochelson 1958
†Cyrtonellopsis vetulum Sardeson 1896
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 Gasconadian to the top of the Mohawkian or 485.40000 to 451.00000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gasconadian | USA (Missouri) | C. huzzahensis (157091) | |
| Whiterockian - Mohawkian | USA (Minnesota) | C. sp. (10767) | |
| Sarka | Czech Republic | C. sp. (3857) | |
| Blackriveran | USA (Minnesota) | C. vetulum (23085 23555) | |
| Blackriveran | USA (Illinois, Iowa) | C. vetulum (23612) |