Middle Cretaceous (Cenomanian) bivalves from the Karai Formation, Uttattur Group, of the Cauvery Basin, south India

Kendrick, George W.; Vartak, Ajit

doi:10.18195/issn.0313-122x.72.2007.001-101

Cited by 12 publications

(9 citation statements)

References 25 publications

(40 reference statements)

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“…Myrteinae are poorly documented in the fossil record, but some Myrtea ‐like bivalves are present throughout the Cenozoic, and Lucina blanckenhorni Chavan, 1947 from the late Cretaceous (Campanian 83.5−70.6 Ma) may be part of a ‘ Myrtea ’ stem group. Somewhat earlier, Paramyrtea sabulosa Kendrick & Vartak, 2007, from the mid‐Cretaceous (Cenomanian) of India, has shell characters compatible with inclusion in the Myrteinae. The chronogram (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Some Monitilora ‐like bivalves were present in the Mesozoic, but have been placed in the genus Mesomiltha Chavan, 1952 (type species Lucina pulchra Zittel & Goubert, 1861, Jurassic, Oxfordian): an example being Mesomiltha cf. fallax (Forbes, 1846), from the Cretaceous (Cenomanian) of India (Kendrick & Vartak, 2007: fig. 13I–M), but a more detailed study of these species is needed.…”

Section: Discussionmentioning

confidence: 99%

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Molecular phylogeny and classification of the chemosymbiotic bivalve family Lucinidae (Mollusca: Bivalvia)

Taylor

Glover

Smith

et al. 2011

Zoological Journal of the Linnean Society

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A new molecular phylogeny of the chemosymbiotic bivalve family Lucinidae is presented. Using sequences from the nuclear 18S and 28S rRNA genes and the mitochondrial gene cytochrome b, 105 specimens were analysed representing 87 separate species classified into 47 genera. Samples were collected from a wide range of habitats including mangroves, seagrass beds, shallow sands, offshore muds, and hydrocarbon seeps at depths ranging from the intertidal to over 2000 m. A chronogram, derived from the combined molecular tree, was calibrated using ten lucinid fossils. The trees show five well-supported clades and two single branches of Fimbria fimbriata (Linnaeus, 1758) and Monitilora ramsayi (Smith, 1885). A new classification of Lucinidae is proposed with seven subfamilial divisions: three new subfamilies -Pegophyseminae, Leucosphaerinae, and Monitilorinae -are introduced and Codakiinae, usually treated as a synonym of Lucininae, is revived to include the Lucinoma, Codakia, and Ctena subclades. Membership of the Lucininae and Myrteinae is considerably revised compared with Chavan's commonly employed 'Treatise' classification. Previously considered as a separate family, Fimbriinae is now regarded as a subfamily within Lucinidae. The status of Milthinae is presently equivocal pending further analysis and Divaricellinae is recognized as polyphyletic, and is therefore abandoned, with species and genera now grouped in various places within the Lucininae. Deeper water Lucinidae mainly belong to Leucosphaerinae, Codakiinae (Lucinoma clade), and Myrteinae, with Lucinoma species being most frequently associated with hydrocarbon seeps. Species occurring in seagrass habitats derive largely from Pegophyseminae, Codakiinae, and Lucininae, and species from mangrove habitats derive from the Pegophyseminae and Lucininae.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Molecular phylogeny and classification of the chemosymbiotic bivalve family Lucinidae (Mollusca: Bivalvia)

Taylor

Glover

Smith

et al. 2011

Zoological Journal of the Linnean Society

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“…It is beyond the scope of the present study to review fossil lucinids in detail but various Cretaceous fossils can be tentatively assigned to the Myrteinae, such as Paramyrtea from the Cenomanian (Kendrick & Vartak, ), Lucina linearia Stephenson, 1941 from the Maastrichtian, and Lucina blankenhorni Chavan, 1947 from the Campanian. Earlier fossils from the Aptian and Albian of Japan that were originally described as Myrtea species (Matsuda, ; Tashiro & Kozai, ) likely belong in other lucinid clades, including Monitilorinae.…”

Section: Discussionmentioning

confidence: 99%

Diversification of chemosymbiotic bivalves: origins and relationships of deeper water Lucinidae

Taylor

Glover

Williams

2013

Biol J Linn Soc Lond

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Although species of the chemosymbiotic bivalve family Lucinidae are often diverse and abundant in shallow water habitats such as seagrass beds, new discoveries show that the family is equally speciose at slope and bathyal depths, particularly in the tropics, with records down to 2500 m. New molecular analyses including species from habitats down to 2000 m indicate that these cluster in four of seven recognized subfamilies: Leucosphaerinae, Myrteinae, Codakiinae, and Lucininae, with none of these comprising exclusively deep-water species. Amongst the Leucosphaerinae, Alucinoma, Epidulcina, Dulcina, and Myrtina live mainly at depths greater than 200 m. Most Myrteinae inhabit water depths below 100 m, including Myrtea, Notomyrtea, Gloverina, and Elliptiolucina species. In the Codakinae, only the Lucinoma clade live in deep water; Codakia and Ctena clades are largely restricted to shallow water. Lucininae are the most speciose of the subfamilies but only four species analyzed, Troendleina sp., 'Epicodakia' falkandica, Bathyaustriella thionipta, and Cardiolucina quadrata, occur at depths greater than 200 m. Our results indicate that slope and bathyal lucinids have several and independent originations from different clades with a notable increased diversity in Leucosphaerinae and Myrteinae. Some of the deep-water lucinids (e.g. Elliptiolucina, Dulcina, and Gloverina) have morphologies not seen in shallow water species, strongly suggesting speciation and radiation in these environments. By contrast, C. quadrata clusters with a group of shallow water congenors. Although not well investigated, offshore lucinids are usually found at sites of organic enrichment, including sunken vegetation, oxygen minimum zones, hydrocarbon seeps, and sedimented hydrothermal vents. The association of lucinids with hydrocarbon seeps is better understood and has been traced in the fossil record to the late Jurassic with successions of genera recognized; Lucinoma species are particularly prominent from the Oligocene to present day.

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“…21, figs. 1-5) for Atreta subrichthofeni from the Upper Triassic (Norian-Rhaetian) of Iran and by Kendrick and Vartak (2007, fig. 9A-E, 10A-E) for Atreta redunca, from the Cretaceous (Cenomanian) of southeastern India.…”

Section: Atreta Diploschiza Dimya Basiliomya Neoatreta Dimyellamentioning

confidence: 99%

“…Rao (1963), accepting the validity of Diploschiza, reported four possibly new but unnamed species of the genus from the Upper Cretaceous (Cenomanian) of southeastern India, based on shell shape and external ornament. Subsequently, however, Kendrick and Vartak (2007) described a new species, Atreta redunca, from the Cenomanian of SE India that they thought may be synomymous with the undescribed ''Diploschiza'' species of Rao (1963). Atreta redunca, however, has preserved aragonite and has all of the features diagnostic of Atreta, including an orbicular posterior adductor scar in contact with the pallial line, strongly cross-ridged hinge teeth and sockets developed from the aragonitic inner layer, an aragonite line that is well outside of the pallial line and nearly coincident with the denticulation line, and a resilifer that appears to lack overarching.…”

Section: Configuration Of Adductor Scars Unknownmentioning

confidence: 99%

Morphology, phylogeny, and systematic revision of genera in the Dimyidae (Mollusca, Bivalvia, Pteriomorphia)

Waller

2012

J. Paleontol.

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Differences in the mineralogy of hinge teeth and inner shell layers in the family Dimyidae form the basis for a revision of genera. The stem genusAtreta(Late Triassic to Late Cretaceous) has aragonitic denticulate hinge teeth on the right valve articulating with pitted sockets on the left valve. The same arrangement is present inNeoatretan. gen. (Paleocene? Miocene to Recent) but with the appearance of extensive calcitic overarching of the resilifer. InDimyella(Eocene to Recent), aragonitic teeth and sockets are still present but are modified into hook shaped denticulate teeth with corresponding sockets. All three of these genera have inner aragonitic crossed-lamellar shell layers that extend well outside the pallial line. In contrast,Dimya(Eocene to Recent) andBasiliomya(Pliocene to Recent) comprise a second clade in which aragonitic hinge teeth are absent and hinge articulation is calcitic, derived from the calcitic rim.Dimyahas only weak hinge articulation and has an aragonitic inner shell layer delimited by the pallial line; inBasiliomyacalcitic hinge teeth are more prominent and the entire inner shell layer inside the pallial line is foliated calcite.Diploschiza(Cretaceous, Albian to Maastrichtian), here reinstated from synonymy withAtreta, is probably a precursor of theDimya-Basiliomyaclade based on incipient calcitic hinge teeth. Predation pressures probably drove the evolution of this cemented family from its original habitat on hardgrounds in moderately deep water into much greater depths or into cryptic habitats, including submarine caves.New combinations areDimyella malnatrensis(Corselli and Bernocchi),D. molokaia(Dall, Bartsch, and Rehder),D. similis(v. Koenen),Neoatreta dissimilis(Tate),N. filipina(Bartsch),N. kaiparaensis(Laws),N. phaidra(Woodring),and N. plana(Martin).

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Middle Cretaceous (Cenomanian) bivalves from the Karai Formation, Uttattur Group, of the Cauvery Basin, south India

Cited by 12 publications

References 25 publications

Molecular phylogeny and classification of the chemosymbiotic bivalve family Lucinidae (Mollusca: Bivalvia)

Molecular phylogeny and classification of the chemosymbiotic bivalve family Lucinidae (Mollusca: Bivalvia)

Diversification of chemosymbiotic bivalves: origins and relationships of deeper water Lucinidae

Morphology, phylogeny, and systematic revision of genera in the Dimyidae (Mollusca, Bivalvia, Pteriomorphia)

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