Inoceramus arvanus on:
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''Inoceramus'' (Greek: translation "strong pot") is an extinct genus of fossil Marine (ocean), marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the Extant taxon, extant genus ''Pteria (bivalve), Pteria''. They lived from the Early Jurassic to latest Cretaceous.''Inoceramus''
at Fossilworks.orgWard ''et al.''
"Ammonite and inoceramid bivalve extinction patterns in Cretaceous/Tertiary boundary sections of the Biscay region (southwestern France, northern Spain)"
''Geology (journal), Geology'', 1991
''Inoceramids'' had thick shells composed of "prisms" of calcite deposited perpendicular to the surface, and unweathered fossils commonly preserve the mother-of-pearl luster the shells had in life. Most species have prominent growth lines which appear as raised semicircles concentric to the growing edge of the shell.
In 1952, the huge specimen of ''Inoceramus steenstrupi'' 187 cm long, was found in Qilakitsoq, the Nuussuaq Peninsula, Greenland. This fossil is 83 Ma old, the Upper Santonian or Lower Campanian stage. Paleontologists suggest that the giant size of some species was an adaptation for life in the murky bottom waters, with a correspondingly large gill area that would have allowed the animal to survive in oxygen-deficient waters.
File:InoceramusCretaceousSouthDakota.jpg, ''Inoceramus'' from the Cretaceous of South Dakota
File:Inoceramidae - Inoceramus proximus.JPG, ''Inoceramus proximus''
File:Inoceramus cuvieri Palaeontological exhibition Prague.jpg, ''Inoceramus cuvieri''
File:Inoceramus vancouverensis 1.jpg, ''Inoceramus vancouverensis''
File:Inoceramus hobetsensis - National Museum of Nature and Science, Tokyo - DSC06954.JPG, ''Inoceramus hobetsensis''
Upper Cretaceous Bivalvia of Alabama
{{Taxonbar, from=Q129300 Inoceramidae Prehistoric bivalve genera Jurassic bivalves Cretaceous bivalves Mesozoic Antarctica Mesozoic animals of Africa Mesozoic animals of Asia Cretaceous molluscs of Europe Prehistoric bivalves of North America Mesozoic animals of South America Mesozoic Chile Cretaceous Argentina Cretaceous Brazil Cretaceous Colombia Cretaceous Ecuador Cretaceous Peru Cretaceous Venezuela Early Jurassic genus first appearances Toarcian genera Aalenian genera Bajocian genera Bathonian genera Callovian genera Oxfordian genera Kimmeridgian genera Tithonian genera Berriasian genera Valanginian genera Hauterivian genera Barremian genera Aptian genera Albian genera Cenomanian genera Turonian genera Coniacian genera Santonian genera Campanian genera Maastrichtian genera Late Cretaceous genus extinctions Fossil taxa described in 1814 Fossils of Serbia
at Fossilworks.orgWard ''et al.''
"Ammonite and inoceramid bivalve extinction patterns in Cretaceous/Tertiary boundary sections of the Biscay region (southwestern France, northern Spain)"
''Geology (journal), Geology'', 1991
Taxonomy
The Taxonomy (biology), taxonomy of the inoceramids is disputed, with genera such as ''Platyceramus'' sometimes classified as subgenus within ''Inoceramus''. Also the number of valid species in this genus is disputed.Description
''Inoceramids'' had thick shells composed of "prisms" of calcite deposited perpendicular to the surface, and unweathered fossils commonly preserve the mother-of-pearl luster the shells had in life. Most species have prominent growth lines which appear as raised semicircles concentric to the growing edge of the shell.
In 1952, the huge specimen of ''Inoceramus steenstrupi'' 187 cm long, was found in Qilakitsoq, the Nuussuaq Peninsula, Greenland. This fossil is 83 Ma old, the Upper Santonian or Lower Campanian stage. Paleontologists suggest that the giant size of some species was an adaptation for life in the murky bottom waters, with a correspondingly large gill area that would have allowed the animal to survive in oxygen-deficient waters.
Selected species
*†''I. aequicostatus'' *†''I. albertensis'' *†''I. altifluminis'' *†''I. americanus'' *†''I. andinus'' *†''I. anglicus'' *†''I. anilis'' *†''I. anomalus'' *†''I. anomiaeformis'' *†''I. apicalis'' *†''I. arvanus'' *†''I. bellvuensis'' *†''I. biformis'' *†''I. brownei'' *†''I. carsoni'' *†''I. comancheanus'' *†''I. constellatus'' *†''I. corpulentus'' *†''I. coulthardi'' *†''Inoceramus cuvieri, I. cuvieri'' *†''I. dakotensis'' *†''I. dominguesi'' *†''I. dowlingi'' *†''I. dunveganensis'' *†''I. elburzensis'' *†''I. everesti'' *†''I. fibrosus'' *†''I. formosulus'' *†''I. fragilis'' *†''I. frechi'' *†''I. galoi'' *†''I. gibbosus'' *†''I. ginterensis'' *†''I. glacierensis'' *†''I. haast'' *†''I. howelli'' *†''I. incelebratus'' *†''I. inconditus'' *†''I. kystatymensis'' *†''I. lamarcki'' *†''I. lateris'' *†''I. mesabiensis'' *†''I. morii'' *†''I. multiformis'' *†''I. mytiliformis'' *†''I. nipponicus'' *†''I. perplexus'' *†''I. pictus'' *†''I. pontoni'' *†''I. porrectus'' *†''I. prefragilis'' *†''I. proximus' *†''I. pseudolucifer'' *†''I. quenstedti'' *†''I. robertsoni'' *†''I. saskatchewanensis'' *†''I. selwyni'' *†''I. sokolovi'' *†''I. steinmanni'' *†''I. subdepressus'' *†''I. tenuirostratus'' *†''I. triangularis' *†''I. undabundus'' *†''I. ussuriensis''Distribution
Species of ''Inoceramus'' had a worldwide distribution during the Cretaceous and Jurassic periods (from 189.6 to 66.043 Ma). Many examples are found in the Pierre Shale of the Western Interior Seaway in North America. ''Inoceramus'' can also be found abundantly in the Cretaceous Gault Clay that underlies Geology of London, London. Other locations for this fossil include Vancouver Island,Ludvigsen & Beard, 1997, pp. 102–103 British Columbia, Colombia (Hiló Formation, Tolima Department, Tolima and La Frontera Formation, Boyacá Department, Boyacá, Cundinamarca Department, Cundinamarca and Huila Department, Huila),Acosta & Ulloa, 2001, p. 41 Spain, France, Germany, Afghanistan, Albania, Algeria, Angola, Antarctica, Argentina, Australia, Austria, Brazil, Bulgaria, Canada (Alberta, Northwest Territories, Nunavut, Saskatchewan, Yukon), Chile, China, Cuba, the Czech Republic, Denmark, Ecuador, Egypt, Greenland, Hungary, India, Indian Ocean, Iran, Italy, Jamaica, Japan, Jordan, Kenya, Libya, Madagascar, Mexico, Morocco, Mozambique, Nepal, New Caledonia, New Zealand, Nigeria, Papua New Guinea, Peru, Poland, the Russian Federation, Saudi Arabia, Serbia and Montenegro, South Africa, Sweden, Switzerland, Tunisia, Turkey, Turkmenistan, the United Kingdom, United States (Alabama, Alaska, Arizona, Arkansas, California, Colorado, Delaware, Idaho, Iowa, Kansas, Maryland, Minnesota, Mississippi, Montana, Nebraska, New Jersey, New Mexico, North Carolina, North Dakota, Oregon, South Carolina, South Dakota, Tennessee, Texas, Utah, Washington, Wyoming), and Venezuela.Gallery
References
Bibliography
* *Further reading
* * * *External links
Upper Cretaceous Bivalvia of Alabama
{{Taxonbar, from=Q129300 Inoceramidae Prehistoric bivalve genera Jurassic bivalves Cretaceous bivalves Mesozoic Antarctica Mesozoic animals of Africa Mesozoic animals of Asia Cretaceous molluscs of Europe Prehistoric bivalves of North America Mesozoic animals of South America Mesozoic Chile Cretaceous Argentina Cretaceous Brazil Cretaceous Colombia Cretaceous Ecuador Cretaceous Peru Cretaceous Venezuela Early Jurassic genus first appearances Toarcian genera Aalenian genera Bajocian genera Bathonian genera Callovian genera Oxfordian genera Kimmeridgian genera Tithonian genera Berriasian genera Valanginian genera Hauterivian genera Barremian genera Aptian genera Albian genera Cenomanian genera Turonian genera Coniacian genera Santonian genera Campanian genera Maastrichtian genera Late Cretaceous genus extinctions Fossil taxa described in 1814 Fossils of Serbia