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Plocezyga ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	Not linked to a GBIF record.
PaleoBioDB ID (PBDB)	10289	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=10289

Rank

genus (PBDB)

Taxonomy (PBDB)

Life : Animalia : Mollusca : Gastropoda : Pseudozygopleuridae : Plocezyga

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	Prosobranchia	Milne-Edwards 1848
superorder	Caenogastropoda	Cox 1959
superfamily	Zygopleuroidea	Wenz 1938
family	Pseudozygopleuridae
genus	Plocezyga	Knight 1930

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Plocezyga	subgenus	belongs to Hemizyga	stated with evidence	Knight, 1930
Plocezyga	genus	belongs to Pseudozygopleurinae	stated with evidence	Knight et al., 1960
Plocezyga	genus	belongs to Pseudozygopleuridae	stated without evidence	Hoare and Sturgeon, 1980
Plocezyga	subgenus	belongs to Gamizyga	stated with evidence	Hoare and Sturgeon, 1980
Plocezyga	genus	belongs to Neotaenioglossa	second hand	Sepkoski, 2002
Plocezyga	genus	belongs to Pseudozygopleurinae	stated with evidence	Pan and Erwin, 2002

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

318 - 311 Ma
Carboniferous

Last Recorded Appearance

168 - 165 Ma
Middle Jurassic

Motility

actively mobile (based on Gastropoda)

Vision

limited (based on Gastropoda)

Taphonomy

aragonite (based on Gastropoda)

Primary Reference (PBDB)

J. B. Knight. 1930. The gastropods of the St. Louis, Missouri, Pennsylvanian outlier: the Pseudozygopleurinae. Journal of Paleontology Memoir 4(4):1-88

Fossil Distribution

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Plocezyga (Plocezyga) ✝ subgenus	listed (PBDB)	3	314 Ma Carboniferous	254 Ma Permian
Hemizyga (Plocezyga) abolescens ✝ species	listed (PBDB)	1	315 Ma Carboniferous	315 Ma Carboniferous
Hemizyga (Plocezyga) angularis ✝ species	listed (PBDB)	1	315 Ma Carboniferous	315 Ma Carboniferous
Hemizyga (Plocezyga) convertacostata ✝ species	listed (PBDB)	1	314 Ma Carboniferous	314 Ma Carboniferous
Hemizyga (Plocezyga) serocorona ✝ species	listed (PBDB)	1	279 Ma Permian	279 Ma Permian
Hemizyga (Plocezyga) tenuis ✝ species	listed (PBDB)	1	315 Ma Carboniferous	315 Ma Carboniferous
Gamizyga acuminata ✝ species	accepted (GBIF) listed (PBDB)	2	306 Ma Carboniferous	303 Ma Carboniferous
Gamizyga conica ✝ species	accepted (GBIF) listed (PBDB)	7	318 Ma Carboniferous	303 Ma Carboniferous
Gamizyga cordiformis ✝ species	accepted (GBIF) listed (PBDB)	1	306 Ma Carboniferous	306 Ma Carboniferous
Hemizyga corona ✝ species	accepted (GBIF) listed (PBDB)	3	315 Ma Carboniferous	314 Ma Carboniferous
Aclisina costata ✝ species	accepted (GBIF) listed (PBDB)	7	306 Ma Carboniferous	306 Ma Carboniferous
Gamizyga delicata ✝ species	accepted (GBIF) listed (PBDB)	5	318 Ma Carboniferous	306 Ma Carboniferous
Gamizyga excellens ✝ species	accepted (GBIF) listed (PBDB)	1	314 Ma Carboniferous	314 Ma Carboniferous
Plocezyga indica ✝ species	listed (PBDB)	1	260 Ma Permian	260 Ma Permian
Gamizyga intermedia ✝ species	accepted (GBIF) listed (PBDB)	7	314 Ma Carboniferous	306 Ma Carboniferous
Gamizyga lineata ✝ species	accepted (GBIF) listed (PBDB)	1	314 Ma Carboniferous	314 Ma Carboniferous
Gamizyga lirata ✝ species	accepted (GBIF) listed (PBDB)	2	318 Ma Carboniferous	318 Ma Carboniferous
Gamizyga markae ✝ species	accepted (GBIF) listed (PBDB)	1	306 Ma Carboniferous	306 Ma Carboniferous
Gamizyga obscura ✝ species	accepted (GBIF) listed (PBDB)	1	303 Ma Carboniferous	303 Ma Carboniferous
Aclisina ornata ✝ species	accepted (GBIF) listed (PBDB)	7	306 Ma Carboniferous	306 Ma Carboniferous
Gamizyga ornatissima ✝ species	accepted (GBIF) listed (PBDB)	2	306 Ma Carboniferous	306 Ma Carboniferous
Hemizyga percostata ✝ species	accepted (GBIF) listed (PBDB)	6	315 Ma Carboniferous	306 Ma Carboniferous
Gamizyga perminuta ✝ species	accepted (GBIF) listed (PBDB)	1	314 Ma Carboniferous	314 Ma Carboniferous
Gamizyga regularia ✝ species	accepted (GBIF) listed (PBDB)	1	306 Ma Carboniferous	306 Ma Carboniferous
Gamizyga subnodosa ✝ species	accepted (GBIF) listed (PBDB)	7	318 Ma Carboniferous	306 Ma Carboniferous
Gamizyga subquadrata ✝ species	accepted (GBIF) listed (PBDB)	1	303 Ma Carboniferous	303 Ma Carboniferous
Hemizyga tenuilirata ✝ species	accepted (GBIF) listed (PBDB)	4	315 Ma Carboniferous	314 Ma Carboniferous
Gamizyga turbinata ✝ species	accepted (GBIF) listed (PBDB)	4	306 Ma Carboniferous	303 Ma Carboniferous

Synonymy List

Year	Name and Author
1930	Hemizyga (Plocezyga) Knight pp. 17 – 18
1960	Plocezyga Knight et al. p. 315
1980	Gamizyga (Plocezyga) Hoare and Sturgeon p. 160
1980	Plocezyga Hoare and Sturgeon p. 1101
2002	Ploceozyga Pan and Erwin p. 25
2002	Plocezyga Sepkoski, Jr.
2017	Plocezyga Wagner p. G1200

References

Knight J. B. (1930) The gastropods of the St. Louis, Missouri, Pennsylvanian outlier: the Pseudozygopleurinae, Journal of Paleontology Memoir 4 4, 1-88

Knight J. B., Cox L. R., et al (1960) Systematic descriptions, Treatise on Invertebrate Paleontology. Mollusca I 1, 169-339

Hoare R. D., Sturgeon M. T. (1980) The Pennsylvanian pseudozygopleurid gastropod genus Gamizyga n. gen. from Ohio and West Virginia, Journal of Paleontology 54 1, 159-187

Pan H. -Z., Erwin D. H. (2002) Gastropods from the Permian of Guangxi and Yunnan Provinces, South China, Journal of Paleontology Memoir 56, 1-49 doi:10.1666/0022-3360(2002)76[1:GFTPOG]2.0.CO;2

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560

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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