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Cyclonema bilix

Gastropoda - Euomphalina - Platyceratidae

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).

Synonymy list
YearName and author
1842Pleurotomaria bilix Conrad p. 271
1847Pleurotomaria bilix Hall p. 305
1852Cyclonema bilix Hall p. 89
1861Cyclonema bilix Hall p. 92
1897Cyclonema bilix Ulrich and Scofield pp. 1058 - 1059 figs. pl. 78 f. 35-42
1923Cyclonema bilix Foerste pp. 100 - 101
1951Cyclonema bilix Wilson p. 78
1970Cyclonema bilix Thompson pp. 236 - 240 figs. pl. 31 f. 1-11; pl. 35 f. 1-6
1980Cyclonema bilex Tassell p. 11
2023Cyclonema bilix Wagner p. 571

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassEogastropoda
orderEuomphalina
superfamilyPlatyceratoidea()
familyPlatyceratidae
genusCyclonema
speciesbilix()

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 Conrad 1842
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†Cyclonema bilix conicum Miller 1874
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragoniteg
Composition 2: low Mg calciteg
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Adult height: 10 to < 100g
Folds: noneg
Ribbing: minorg
Spines: noneg
Internal reinforcement: noneg
Ontogeny: accretionsuperf
Environment: marinef
Locomotion: facultatively mobileg
Epibiont: yesg
Life habit: epifaunalg
Diet: coprophageg
Diet 2: deposit feederg
Vision: limitedc
Created: 2004-08-16 09:07:28
Modified: 2009-07-20 15:18:07
Source: g = genus, f = family, superf = superfamily, c = class
References: Knight et al. 1960, Wagner 2023, Kiessling 2004, Batten 1984

Age range: base of the Maysvillian to the top of the Pridoli or 450.20000 to 419.20000 Ma

Collections (22 total)


Time interval Ma Country or state Original ID and collection number
Maysvillian450.2 - 449.6USA (Tennessee) Cyclonema bilix (5391)
Maysvillian450.2 - 449.6Canada (Quebec) Cyclonema bilix (173038)
Richmondian449.6 - 445.5Canada (Quebec) Cyclonema bilix (172789 173037 173245)
Richmondian449.6 - 445.5USA (Iowa) Cyclonema bilix (172795)
Richmondian449.6 - 445.5USA (Indiana) Cyclonema sp. (373)
Richmondian449.6 - 445.5Canada (Québec) Cyclonema bilix (172794 173239)
Richmondian449.6 - 445.5Canada (Ontario) Cyclonema bilix (155173 173013 173026 173136 173240 173338)
Richmondian449.6 - 445.5USA (Ohio) Cyclonema bilix (5326 77927)
Ashgill449.5 - 443.7USA (Tennessee) Cyclonema bilix (5392 5393)
Ashgill449.5 - 443.7Canada (Ontario) Cyclonema bilix (26304)
Rhuddanian - Aeronian443.4 - 438.5Russian Federation (Siberia) Cyclonema bilix (206465)
Ludlow - Pridoli427.4 - 419.2USA (California) Cyclonema bilex (79807)