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Cyclonema bilix ✝

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Cyclonema bilix

Cincinnati, Hamilton County, Ohio, USA

Cyclonema bilix

Cincinnati, Hamilton County, Ohio, USA

Cyclonema bilix

Cincinnati, Hamilton County, Ohio, USA

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	6141641	https://www.gbif.org/species/6141641
PaleoBioDB ID (PBDB)	79417	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=79417

Rank

species

Taxonomy (GBIF)

Life : Animalia : Mollusca : Gastropoda : Platyceratidae : Cyclonema : Cyclonema bilix

Taxonomy (PBDB)

Life : Animalia : Mollusca : Gastropoda : Euomphalina : Platyceratidae : Cyclonema : Cyclonema bilix

Taxonomic Status (GBIF)

accepted

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Bilateria
-	Eubilateria	Ax 1987
-	Protostomia	Grobben 1908
-	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca	Linnaeus 1758
class	Gastropoda	Cuvier 1797
subclass	Eogastropoda	Ponder and Lindberg 1996
order	Euomphalina	de Koninck 1881
superfamily	Platyceratoidea
family	Platyceratidae	Hall 1859
genus	Cyclonema	Hall 1852
species	Cyclonema bilix	Conrad 1842

Generic Name

Cyclonema

Scientific Name

Cyclonema bilix

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Cyclonema bilix	species	belongs to Pleurotomaria	stated without evidence	Conrad, 1842
Cyclonema bilix	species	belongs to Cyclonema	stated without evidence	Hall, 1852
Cyclonema bilix	species	belongs to Cyclonema	stated with evidence	Ulrich and Scofield, 1897
Cyclonema bilix	species	belongs to Cyclonema	stated without evidence	Foerste, 1923
Cyclonema bilix	species	belongs to Cyclonema	stated with evidence	Wagner, 2017

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

452 - 450 Ma
Late/Upper Ordovician

Last Recorded Appearance

427 - 419 Ma
Paleozoic

Environment

marine (based on Platyceratidae)

Motility

facultatively mobile, epibiont (based on Cyclonema)

Vision

limited (based on Gastropoda)

Diet

coprophage, deposit feeder (based on Cyclonema)

Ontogeny

accretion (based on Platyceratoidea)

Taphonomy

aragonite, low Mg calcite,minor ribbing (based on Cyclonema)

Primary Reference (PBDB)

T. A. Conrad. 1842. Observations on the Silurian and Devonian systems of the United States, with descriptions of new organic remains. Journal of the Academy of Natural Sciences of Philadelphia 8(2):228-280

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)
Cyclonema bilix conicum ✝ subspecies	accepted (GBIF) listed (PBDB)
Cyclonema bilix fluctuatum ✝ subspecies	accepted (GBIF) listed (PBDB)
Cyclonema bilix lata subspecies	accepted (GBIF)	No associated record in PBDB

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
2020	Cyclonema bilix Wagner p. 571

References

Conrad T. A. Observations on the Silurian and Devonian systems of the United States, with descriptions of new organic remains, Journal of the Academy of Natural Sciences of Philadelphia 8 2, 228-280

Hall J. Containing descriptions of the organic remains of the lower division of the New York system (equivalent of the Lower Silurian rocks of Europe), Paleontology of New York 1, 1-338

Hall J. Containing descriptions of the organic remains of the lower middle division of the New York system, Paleontology of New York 2, 1-362

Hall J. Upon some new and other species of fossils, from the rocks of the Hudson-river group of Ohio and the western states; with descriptions, Annual report of the Regents of the University of the State of New York on the State Cabinet of Natural History and the Historical and Antiquarian collection annexed thereto 14, 89-109

Ulrich E. O., Scofield W. H. The Lower Silurian Gastropoda of Minnesota, The Paleontology of Minnesota 39 2, 813-1081

Foerste A. F. (1923) Notes on the Medinan, Niagaran, and Chester fossils, Bulletin of the Scientific Laboratories of Denison University 23, 37-120

Wilson A. E. (1951) Gastropoda and Conularida of the Ottawa Formation of the Ottawa - St. Lawrence Lowland, Geological Survey of Canada Bulletin 17, 1-149

Thompson E. H. (1970) Morphology and taxonomy of Cyclonema Hall (Gastropoda), Upper Ordovician Cincinnatian province, Bulletins of American Paleontology 58 261, 219-284

Tassell C. B. (1980) Further gastropods from the Early Devonian Lilydale Limestone, Records of the Queen Victoria Museum 69, 3-27

Wagner P. J. (2017) Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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