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Helcionopsis

Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)Not linked to a GBIF record.
PaleoBioDB ID (PBDB)7813https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=7813
Rankgenus (PBDB)
Taxonomy (PBDB)Life : Animalia : Mollusca : Tergomya : Tryblidiida : Tryblidiidae : Helcionopsis
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-Bilateria
-EubilateriaAx 1987
-ProtostomiaGrobben 1908
-Spiralia
superphylumLophotrochozoa
phylumMolluscaLinnaeus 1758
classTergomyaHorný 1965
orderTryblidiida
superfamilyTryblidioidea
familyTryblidiidaevon Zittel 1899
subfamilyTryblidiinaevon Zittel 1899
genusHelcionopsisUlrich and Scofield 1897
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Helcionopsisgenusbelongs to Tryblidiinaestated with evidenceKnight and Yochelson, 1960
Helcionopsisgenusbelongs to Tryblidiidaestated without evidenceStarobogatov, 1970
Helcionopsisgenusbelongs to Tryblidiidaestated with evidenceRunnegar and Jell, 1976
Helcionopsisgenusbelongs to Tryblidiinaestated with evidenceWahlman, 1992
Helcionopsisgenusbelongs to Tryblidiidasecond handSepkoski, 2002
Status (PBDB)extinct
Taxon Size (PBDB)7
First Recorded Appearance479 - 468 Ma
Ordovician
Last Recorded Appearance450 - 444 Ma
Paleozoic
Motilityactively mobile (based on Tryblidiida)
Visionblind (based on Tergomya)
Dietgrazer (based on Tryblidiida)
Primary Reference (PBDB)E. O. Ulrich and W. H. Scofield. 1897. The Lower Silurian Gastropoda of Minnesota. The Paleontology of Minnesota 39(2):813-1081

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Helcionopsis depressum
species
listed (PBDB)10461 Ma
Middle Ordovician
461 Ma
Middle Ordovician
Helcionopsis radiatum
species
listed (PBDB)
Helcionopsis reticulatus
species
listed (PBDB)
Helcionopsis striata
species
listed (PBDB)1452 Ma
Late/Upper Ordovician
452 Ma
Late/Upper Ordovician
Helcionopsis subcarinata
species
listed (PBDB)
Helcionopsis wisconsinensis
species
listed (PBDB)5461 Ma
Middle Ordovician
461 Ma
Middle Ordovician

Synonymy List

YearName and Author
1897Helcionopsis Ulrich and Scofield
1960Helcionopsis Knight and Yochelson p. 79
1970Helcionopsis Starobogatov p. 301
1976Helcionopsis Runnegar and Jell p. 119
1992Helcionopsis Wahlman
2002Helcionopsis Sepkoski, Jr.

References

Ulrich E. O., Scofield W. H. The Lower Silurian Gastropoda of Minnesota, The Paleontology of Minnesota 39 2, 813-1081
Knight J. B., Yochelson E. L. (1960) Monoplacophora, Treatise on invertebrate paleontology. Part I. Mollusca 1 I 1, 77-84
Starobogatov Y.I. (1970) Systematics of Early Paleozoic Monoplacophora, Paleontological Journal 10 3, 293-302
Runnegar B., Jell P.A. (1976) Australian Middle Cambrian molluscs and their bearing on early molluscan evolution, Alcheringa 1 1/2, 109-132
Wahlman G.P. (1992) Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati Arch region, United States Geological Survey Professional Paper 1066 O, 1-123
Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
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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