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Oxytoma ✝

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Description

Oxytoma is an extinct genus of bivalve molluscs that lived from the Late Permian to the early Paleocene with a worldwide distribution except Australia.

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

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4592447	https://www.gbif.org/species/4592447
PaleoBioDB ID (PBDB)	16876	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=16876

Rank

genus

Taxonomy (GBIF)

Life : Animalia : Mollusca : Bivalvia : Pectinida : Oxytomidae : Oxytoma

Taxonomy (PBDB)

Life : Animalia : Mollusca : Bivalvia : Pectinida : Oxytomidae : Oxytoma

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	Bivalvia	Linnaeus 1758
-	Eubivalvia	Carter 2011
subclass	Autobranchia
infraclass	Pteriomorphia
-	Ostreomorphi	Ferussac 1822
-	Ostreioni	Ferussac 1822
-	Ostreata	Ferussac 1822
superorder	Ostreiformii	Ferussac 1822
order	Pectinida
suborder	Anomiidina	Gray 1854
-	Monotoidei	Waterhouse 2001
superfamily	Oxytomoidea	Ichikawa 1958
family	Oxytomidae	Ichikawa 1958
genus	Oxytoma	Meek 1864

Scientific Name

Oxytoma Meek, 1864

Name Published In

Smithson. Misc. Coll., 7, no. 177, 28

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Oxytoma	subgenus	belongs to Pteria	stated with evidence	Russell and Landes, 1937
Oxytoma	genus	belongs to Oxytomidae	stated with evidence	Cox, 1961
Oxytoma	genus	belongs to Pterioida	second hand	Sepkoski, 2002
Oxytoma	genus	belongs to Oxytomidae	stated without evidence	Scholz et al., 2008
Oxytoma	genus	belongs to Oxytominae	stated without evidence	Bouchet et al., 2010
Oxytoma	genus	belongs to Oxytomidae	stated without evidence	McRoberts, 2011

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

272 - 269 Ma
Permian

Last Recorded Appearance

66.0 - 61.6 Ma
Paleocene

Environment

marine (based on Pectinida)

Motility

stationary, attached

Vision

blind (based on Bivalvia)

Diet

suspension feeder

Ecospace Comments

Attached (attached to wood), epifaunal, suspension-feeder (McKerrow, 1979).

Taphonomy

low Mg calcite

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/Oxytoma

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Oxytoma (Oxytoma) ✝ subgenus	listed (PBDB)		64	242 Ma Middle Triassic	145 Ma Late Jurassic
Oxytoma (Palmoxytoma) ✝ subgenus	listed (PBDB)		31	209 Ma Late/Upper Triassic	190 Ma Early Jurassic
Avicula inequivalvis species	accepted (GBIF)	No associated record in PBDB
Avicula nebrascana species	accepted (GBIF)	No associated record in PBDB
Avicula octavia species	accepted (GBIF)	No associated record in PBDB
Oxytoma anadyrensis ✝ species	listed (PBDB)		2	212 Ma Late/Upper Triassic	212 Ma Late/Upper Triassic
Oxytoma atsuensis ✝ species	listed (PBDB)		3	242 Ma Middle Triassic	235 Ma Late/Upper Triassic
Oxytoma bifurcata ✝ species	accepted (GBIF) listed (PBDB)		1	197 Ma Early Jurassic	197 Ma Early Jurassic
Oxytoma camselli ✝ species	accepted (GBIF) listed (PBDB)		1	109 Ma Early/Lower Cretaceous	109 Ma Early/Lower Cretaceous
Oxytoma costatum ✝ species	accepted (GBIF) listed (PBDB)		4	174 Ma Middle Jurassic	168 Ma Middle Jurassic
Oxytoma czekanowskii ✝ species	accepted (GBIF) listed (PBDB)		6	228 Ma Late/Upper Triassic	222 Ma Late/Upper Triassic
Oxytoma gizhigensis ✝ species	listed (PBDB)		1	228 Ma Late/Upper Triassic	228 Ma Late/Upper Triassic
Oxytoma hargrovei ✝ species	accepted (GBIF) listed (PBDB)		1	66.0 Ma Late/Upper Cretaceous	66.0 Ma Late/Upper Cretaceous
Oxytoma inequivalvis ✝ species	listed (PBDB)		268	228 Ma Late/Upper Triassic	140 Ma Early/Lower Cretaceous
Oxytoma kiparisovae ✝ species	accepted (GBIF) listed (PBDB)		5	228 Ma Late/Upper Triassic	228 Ma Late/Upper Triassic
Oxytoma kobayashii ✝ species	accepted (GBIF) listed (PBDB)		3	199 Ma Early Jurassic	197 Ma Early Jurassic
Oxytoma koniensis ✝ species	listed (PBDB)		5	228 Ma Late/Upper Triassic	199 Ma Early Jurassic
Oxytoma mclearni species	accepted (GBIF)	No associated record in PBDB
Oxytoma mojsisovicsi ✝ species	accepted (GBIF) listed (PBDB)		32	237 Ma Middle Triassic	209 Ma Late/Upper Triassic
Oxytoma okunevae ✝ species	accepted (GBIF) listed (PBDB)		2	190 Ma Early Jurassic	190 Ma Early Jurassic
Oxytoma omolonensis ✝ species	listed (PBDB)		2	212 Ma Late/Upper Triassic	212 Ma Late/Upper Triassic
Oxytoma tokuyamae ✝ species	listed (PBDB)		2	235 Ma Late/Upper Triassic	235 Ma Late/Upper Triassic
Oxytoma zitteli ✝ species	listed (PBDB)		15	228 Ma Late/Upper Triassic	222 Ma Late/Upper Triassic
Pteria (Oxytoma) nebrascana ✝ species	listed (PBDB)		35	89.8 Ma Late/Upper Cretaceous	70.6 Ma Late/Upper Cretaceous

Synonymy List

Year	Name and Author
1864	Oxytoma Meek
1937	Pteria (Oxytoma) Russell and Landes p. 136
1961	Oxytoma Cox
1980	Oxytoma Vokes p. 49
2002	Oxytoma Sepkoski, Jr.
2008	Oxytoma Scholz et al.
2010	Oxytoma Bouchet et al.
2011	Oxytoma McRoberts p. 638
2014	Oxytoma Ros-Franch et al.

References

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

Russell L. S., Landes R. W. (1937) Geology of the Southern Alberta Plains. Part II. Paleontology of the marine formations of the Montana Group, Geological Survey of Canada Memoir 221

Cox L. R. (1961) New genera and subgenera of Mesozoic Bivalvia, Palaeontology 4 4, 592-598

Vokes H. E. (1980) Genera of the Bivalvia: a systematic and bibliographic Catalogue, Genera of the Bivalvia: a systematic and bibliographic Catalogue

Scholz A., Aberhan M., et al (2008) Early Jurassic bivalves of the Antimonio terrane (Sonora, NW Mexico): Taxonomy, biogeography, and paleogeographic implications, Geological Society of America Special Paper 442, 269-312

Bouchet P., Rocroi J.-P., et al (2010) Nomenclator of Bivalve Families with a Classification of Bivalve Families, Malacologia 52 2, 1-184 doi:10.4002/040.052.0201

McRoberts C. A. (2011) Late Triassic Bivalvia (Chiefly Halobiidae and Monotidae) from the Pardonet Formation, Williston Lake Area, Northeastern British Columbia, Canada, Journal of Paleontology 85 4, 613-664 doi:10.1666/10-051.1

Ros-Franch S., Márquez-Aliaga A., et al (2014) Comprehensive database on Induan (Lower Triassic) to Sinemurian (Lower Jurassic) marine bivalve genera and their paleobiogeographic record, Paleontological Contributions 8, 1-219

GBIF/Paleo Database - 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

Smithson. Misc. Coll., 7, no. 177, 28 - via The Interim Register of Marine and Nonmarine Genera

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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