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Cyclonema bilix
Taxonomy
Pleurotomaria bilix was named by Conrad (1842). It is not a trace fossil. It is the type species of Cyclonema.
It was recombined as Cyclonema bilex by Tassell (1980); it was recombined as Cyclonema bilix by Hall (1852), Hall (1861), Ulrich and Scofield (1897), Foerste (1923), Wilson (1951), Thompson (1970) and Wagner (2023).
It was recombined as Cyclonema bilex by Tassell (1980); it was recombined as Cyclonema bilix by Hall (1852), Hall (1861), Ulrich and Scofield (1897), Foerste (1923), Wilson (1951), Thompson (1970) and Wagner (2023).
Subspecies
Synonymy list
Year | Name and author |
---|---|
1842 | Pleurotomaria bilix Conrad p. 271 |
1847 | Pleurotomaria bilix Hall p. 305 |
1852 | Cyclonema bilix Hall p. 89 |
1861 | Cyclonema bilix Hall p. 92 |
1897 | Cyclonema bilix Ulrich and Scofield pp. 1058 - 1059 figs. pl. 78 f. 35-42 |
1923 | Cyclonema bilix Foerste pp. 100 - 101 |
1951 | Cyclonema bilix Wilson p. 78 |
1970 | Cyclonema bilix Thompson pp. 236 - 240 figs. pl. 31 f. 1-11; pl. 35 f. 1-6 |
1980 | Cyclonema bilex Tassell p. 11 |
2023 | Cyclonema bilix Wagner p. 571 |
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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.
†Cyclonema bilix conicum Miller 1874
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Diagnosis
No diagnoses are available