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Taxonomy
Cyclus was named by de Koninck (1841) [Sepkoski's age data: C Vise-l P l Sepkoski's reference number: 2]. It is not extant. Its type is Agnostus radialis. It is the type genus of Cyclidae.
It was assigned to Xiphosura by Rogers (1902); to Cyclida by Sepkoski (2002); and to Cyclidae by Goldring (1967), Glaessner (1969), Schram et al. (1997), Schweitzer et al. (2020), Schram and Koenemann (2021).
It was assigned to Xiphosura by Rogers (1902); to Cyclida by Sepkoski (2002); and to Cyclidae by Goldring (1967), Glaessner (1969), Schram et al. (1997), Schweitzer et al. (2020), Schram and Koenemann (2021).
Synonymy list
| Year | Name and author |
|---|---|
| 1841 | Cyclus de Koninck |
| 1902 | Cyclus Rogers p. 269 |
| 1967 | Cyclus Goldring p. 318 |
| 1969 | Cyclus Glaessner p. 569 |
| 1997 | Cyclus Schram et al. p. 264 |
| 2002 | Cyclus Sepkoski |
| 2020 | Cyclus Schweitzer et al. p. 247 |
| 2021 | Cyclus Schram and Koenemann p. 234 |
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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. †Cyclus de Koninck 1841
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†Cyclus bilobatus Woodward 1870
†Cyclus communis Rogers 1902
†Cyclus johnsoni Woodward 1894
†Cyclus jonesianus Woodward 1870
†Cyclus laxus von Meyer 1847
†Cyclus limbatus Rogers 1902
†Cyclus minutus Rogers 1902
†Cyclus obesus Schram et al. 1997
†Cyclus packardi Rogers 1902
†Cyclus permarginatus Rogers 1902
†Cyclus radialis Phillips 1836
†Cyclus rankini Woodward 1869
†Cyclus reussi Gemmellaro 1890
†Cyclus scotti Woodward 1894
†Cyclus testudo Peach 1883
†Cyclus torosus Woodward 1870
†Cyclus wrighti Woodward 1870
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: base of the Tournaisian to the top of the Fassanian or 358.86000 to 239.48000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tournaisian - Visean | Ireland | C. radialis (232435) | |
| Westphalian A | United Kingdom (England) | C. sp. (124367) | |
| Moscovian | USA (Illinois) | C. obesus (132078) | |
| Missourian | USA (Kansas) | C. communis (237800) | |
| Missourian | USA (Missouri) | C. communis, C. packardi, C. permarginatus, C. limbatus, C. minutus (71507) | |
| Wordian | Italy | Paraprosopon reussi (108673) | |
| Fassanian | Germany (Baden-Württemberg) | Halicyne laxa (226188) |