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Hemitoma

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Description

Hemitoma is a genus of slit limpets, marine gastropod molluscs in the family Fissurellidae, the keyhole limpets and slit limpets.

From Wikipedia article at https://en.wikipedia.org/wiki/Hemitoma, which is released under the Creative Commons Attribution-Share-Alike License 3.0.

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	2293535	https://www.gbif.org/species/2293535
PaleoBioDB ID (PBDB)	8459	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=8459

Rank

genus

Taxonomy (GBIF)

Life : Animalia : Mollusca : Gastropoda : Lepetellida : Fissurellidae : Hemitoma

Taxonomy (PBDB)

Life : Animalia : Mollusca : Gastropoda : Fissurellidae : Hemitoma

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	Orthogastropoda	Ponder and Lindberg 1997
superorder	Vetigastropoda	Salvini-Plawen 1980
superfamily	Fissurelloidea	(Fleming 1822)
family	Fissurellidae	Fleming 1822
genus	Hemitoma	Swainson 1840

Scientific Name

Hemitoma Swainson, 1840

Name Published In

Treat. Malacol., 243

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Hemitoma	genus	belongs to Fissurellidae	stated with evidence	Knight et al., 1960
Hemitoma	genus	belongs to Fissurellidae	stated without evidence	Weisbord, 1962
Hemitoma	genus	belongs to Fissurellidae	stated with evidence	Ladd, 1966
Hemitoma	genus	belongs to Emarginulinae	stated with evidence	Perrilliat, 1972
Hemitoma	genus	belongs to Emarginulinae	stated without evidence	Squires, 1987
Hemitoma	genus	belongs to Fissurellidae	implied	Short and Potter, 1987
Hemitoma	genus	belongs to Emarginulidae	implied	Wilson, 1993
Hemitoma	genus	belongs to Fissurellidae	stated with evidence	Todd, 2001
Hemitoma	genus	belongs to Euomphalina	second hand	Sepkoski, 2002
Hemitoma	genus	belongs to Emarginulini	stated without evidence	Bouchet et al., 2005

Status (PBDB)

extant

Taxon Size (PBDB)

Extant Size (PBDB)

6 (50%)

First Recorded Appearance

56.0 - 47.8 Ma
Eocene

Motility

facultatively mobile (based on Fissurellidae)

Vision

limited (based on Gastropoda)

Diet

grazer (based on Fissurellidae)

Taphonomy

aragonite (based on Gastropoda)

Primary Reference (PBDB)

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

Wikipedia

https://en.wikipedia.org/wiki/Hemitoma

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Hemitoma (Hemitoma) subgenus	listed (PBDB)		2	5.33 Ma Miocene	0 Ma Extant
Hemitoma (Montfortia) subgenus	listed (PBDB)		6	56.0 Ma Paleocene	0 Ma Extant
Hemitoma bella species	accepted (GBIF)	No associated record in PBDB
Hemitoma chiquita species	accepted (GBIF)	No associated record in PBDB
Hemitoma cumingii species	accepted (GBIF)	No associated record in PBDB
Hemitoma davincii species	accepted (GBIF)	No associated record in PBDB
Hemitoma golischae species	accepted (GBIF)	No associated record in PBDB
Hemitoma imbricata species	accepted (GBIF)	No associated record in PBDB
Hemitoma lamberti species	accepted (GBIF)	No associated record in PBDB
Hemitoma multiradiata ✝ species	accepted (GBIF) listed (PBDB)
Hemitoma octoradiata ✝ species	accepted (GBIF) listed (PBDB)		6	3.60 Ma Pliocene	2.59 Ma Pleistocene
Hemitoma ostheinerae species	accepted (GBIF)	No associated record in PBDB
Montfortista panhi species	accepted (GBIF) listed (PBDB)
Hemitoma polygonalis species	accepted (GBIF)	No associated record in PBDB
Hemitoma sclera species	accepted (GBIF)	No associated record in PBDB
Hemitoma scrippsae species	accepted (GBIF)	No associated record in PBDB
Hemitoma sowerbyi species	accepted (GBIF)	No associated record in PBDB

Obsolete Names

Name	Source	Taxon Rank	Taxonomy
Subemarginula Gray, 1847	GBIF	genus	Animalia : Mollusca : Gastropoda : Lepetellida : Fissurellidae : *Subemarginula*

Synonymy List

Year	Name and Author
1840	Hemitoma Swainson
1960	Hemitoma Knight et al. p. 228
1962	Hemitoma Weisbord p. 48
1966	Hemitoma Ladd p. 29
1972	Hemitoma Perrilliat p. 19
1987	Hemitoma Short and Potter p. 6

Year	Name and Author
1987	Hemitoma Squires p. 21
1993	Hemitoma Wilson p. 56
2001	Hemitoma Todd
2002	Hemitoma Sepkoski, Jr.
2005	Hemitoma Bouchet et al. pp. 88, 243

References

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

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

Weisbord N.E. (1962) Late Cenozoic gastropods from northern Venezuela, Bulletins of American Paleontology 42 193

Ladd H. S. (1966) Chitons and Gastropods (Haliotidae through Adeorbidae) from Western Pacific Islands, United States Geological Survey Professional Paper 531, 1-98

Perrilliat M. C. (1972) Monografia de los Moluscos del Mioceno Medio de Santa Rosa, Verazruz, Mexico, Paleontologia Mexicana 32, 1-130

Short J. W., Potter D. G. (1987) , Shells of Queensland and the Great Barrier Reef: marine Gastropods

Squires R. L. (1987) Eocene molluscan paleontology of the Whitaker Peak area, Los Angeles and Ventura counties, California, Contributions in Science, Natural History Museum of Los Angeles County 388, 1-93

Wilson B. (1993) , Australian Marine Shells 1

Todd J. A. (2001) Systematic list of gastropods in the Panama Paleontology Project collections

Bouchet P., Rocroi J.-P, et al (2005) A nomenclator and classification of gastropod family-group names, Malacologia 47 1-2, 1-368

Aphia2006 - via The Interim Register of Marine and Nonmarine Genera

CoL2006 - via The Interim Register of Marine and Nonmarine Genera

Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera

Sepkoski, J. J., Jr. (2002). A compendium of fossil marine animal genera. Bulletins of American Paleontology. 363, 1-560. - via The Interim Register of Marine and Nonmarine Genera

Treat. Malacol., 243 - via The Interim Register of Marine and Nonmarine Genera

WoRMS (Mar 2013) - via The Interim Register of Marine and Nonmarine Genera

SN2000/Boss, 1982 - via The Interim Register of Marine and Nonmarine Genera

Vaught, K.C.; Tucker Abbott, R.; Boss, K.J. (1989). A classification of the living Mollusca. American Malacologists: Melbourne. ISBN 0-915826-22-4. XII, 195 pp. - via World Register of Marine Species

Neave, Sheffield Airey. (1939-1996). Nomenclator Zoologicus vol. 1-10 Online. [developed by uBio, hosted online at MBLWHOI Library]. - via World Register of Marine Species

Turgeon, D. D., J. F. Quinn, Jr., A. E. Bogan, E. V. Coan, F. G. Hochberg, W. G. Lyons, et al., 1998: Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks, 2nd ed.. American Fisheries Society Special Publication 26. 526. - via Integrated Taxonomic Information System (ITIS)

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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