Ostracodes and Agglutinated Foraminifera as Indicators of Paleoenvironmental Change in an Early Carboniferous Brackish Bay, Atlantic Canada

Tibert, Neil E.; Scott, David B.

doi:10.2307/3515437

Cited by 54 publications

(46 citation statements)

References 35 publications

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“…This study supports the notion of brackish ostracods in the Mississippian (Tibert & Scott, 1999;Williams et al 2006). Previous studies have recorded freshwater Carbonita from the late Mississippian (Pendleian; Sohn, 1985), while this study records them from the mid-Mississippian (Arundian).…”

Section: D Timing and Duration Of Non-marine Colonizationsupporting

confidence: 90%

“…Cavellina is known for its marginal marine to brackish-water tolerance in Carboniferous environments (Robinson, 1978;Williams et al 2005Williams et al , 2006. Many Mississippian Shemonaella species are interpreted as marine (for example, Crasquin, 1985;Dewey, 1983), but some are considered as brackish (Tibert & Scott, 1999). Mississippian species of Paraparchites with dorsal spines occur in association with typically marine genera such as Amphissites and Bairdia (Sohn, 1969).…”

Section: B Type 2 Assemblage: Marginal Marinementioning

confidence: 99%

“…For example, early Mississippian Carbonita is associated with near-shore marine to low-salinity coastal ponds (Tibert & Scott, 1999). In the Pennsylvanian, Carbonita is also found in coastal environments, such as brackish waters and poorly drained coastal plain sediments (Falcon-Lang et al 2006;Tibert & Dewey, 2006).…”

Section: B Mechanisms For Non-marine Radiationmentioning

confidence: 99%

“…The Palaeozoic Carbonitoidea may be related to the Cypridoidea or Darwinuloidea, and a group of non-marine Cytheroidea (limnocytherids) occur in the Late Carboniferous (Carbonel et al 1988;Horne, 2003). The migration from marine to freshwater by the ostracod Carbonita Strand, 1928 first occurred during the Carboniferous; from brackish-influenced environments in the Mississippian (Pollard, 1966;Anderson, 1970;1973;Sohn, 1985;Tibert & Scott, 1999), to subsequently occupy a wide range of freshwater environments by the Pennsylvanian (Schultze, Maples & Cunningham, 1994;Vannier, Thiery & Racheboeuf, 2003;Schäfer, 2007). Herein, Carbonita is recorded from the early Mississippian in what are interpreted as freshwater sediments.…”

Section: Introductionmentioning

confidence: 99%

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Ostracods from freshwater and brackish environments of the Carboniferous of the Midland Valley of Scotland: the early colonization of terrestrial water bodies

et al. 2011

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-The Mississippian Strathclyde Group of the Midland Valley of Scotland yields some of the earliest non-marine ostracods. The succession records shallow marine, deltaic, estuarine, lagoonal, lacustrine, fluvial and swamp environments representing a series of staging-posts between fully marine and limnetic settings. Macrofossils and ostracods are assigned to marine, marginal marine, brackish and freshwater environments based on their faunal assemblage patterns. Key brackish to freshwater ostracods are Geisina arcuata, Paraparchites circularis n. sp., Shemonaella ornata n. sp. and Silenites sp. A, associated with the bivalves Anthraconaia, Carbonicola, Cardiopteridium, Curvirimula, Naiadites, the microconchid 'Spirorbis', Spinicaudata and fish. Many Platycopina and Paraparchiticopina ostracods are interpreted as euryhaline, which corresponds with their occurrence in marine to coastal plain water bodies, and supports the 'estuary effect' hypothesis of non-marine colonization. The success of non-marine colonization by ostracods was dependent on the intrinsic adaptations of ostracod species to lower salinities, such as new reproductive strategies and the timing of extrinsic mechanisms to drive non-marine colonization, such as sea-level change. The genus Carbonita is the oldest and most common freshwater ostracod, and went on to dominate freshwater environments in the Late Palaeozoic.

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Section: D Timing and Duration Of Non-marine Colonizationsupporting

confidence: 90%

Section: B Type 2 Assemblage: Marginal Marinementioning

confidence: 99%

Section: B Mechanisms For Non-marine Radiationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ostracods from freshwater and brackish environments of the Carboniferous of the Midland Valley of Scotland: the early colonization of terrestrial water bodies

et al. 2011

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“…During this time, Carbonitidae had a wide distribution throughout Europe and North America in continental freshwater deposits (Scott & Summerson, 1943) and other presumably lowsalinity deposits with marine to estuarine affinities (Jones & Kirkby, 1879;Knight, 1928;Anderson, 1970;Tibert & Scott, 1999). Carbonitids are most common in deposits of freshwater swamps, slow streams and lagoons, all of which received freshwater (Scott & Summerson, 1943).…”

Section: History Of Carbonitidaementioning

confidence: 99%

Early Permian Carbonitidae (Ostracoda): ontogeny, affinity, environment and systematics

Retrum

Kaesler

2005

J. Micropalaeontol.

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Abstract. An assemblage of four Carbonita species was deposited with charophytes, lungfishes and lysorophids in a lenticular mudstone from a Cisuralian freshwater pond deposit from the lowest Permian. Samples contained few adult Carbonita, indicating perhaps a stressed and unstable environment. Two species new to science, C. ovata n. sp. and C. triangulata n. sp., occur together with C. evelinae and C. pungens. Morphological characters of these Carbonita suggest an affinity with the Healdioidea, marine taxa that are probably ancestral to the Carbonitidae. The muscle-scar patterns of Carbonitidae, which comprise closely grouped circular bundles of secondary muscle scars, resemble closely those of Healdioidea and not those of Cypridoidea and Cytheroidea, whose muscle scars are fewer and spaced further apart. The muscle-scar pattern of C. pungens, described here for the first time, is a circular scar with an ascertainable pattern of secondary scars. C. pungens and species of Darwinula are morphologically similar, but study of additional specimens of C. pungens with better-preserved muscle scars is essential to determine their evolutionary affinity.

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The Adaptations of the Foraminifera and Ostracoda to Fresh Water Colonisation

Iglikowska

Pawłowska

2015

GeoPlanet: Earth and Planetary Sciences

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In marine environments Ostracoda and Foraminifera have been very successful invaders. During the Phanerozoic they colonised the majority of shallow, marginal to deep water, fully marine habitats. Both groups had developed physiological adaptations which pre-adapted them to the invasion of new marine habitats. They adopted a broad range of feeding strategies and reproduction modes. The production of resting stages and brood care may also have contributed to them being efficient invaders. They are also both highly tolerant to variations in salinity. The first invasions of non-marine habitats by ostracods appear to have taken place at the turn of the Devonian and Carboniferous. It is estimated that there had been between 9 and 12 independent invasions of fresh waters by the ostracods. In contrast Foraminifera are typically marine organisms, and only a few species of agglutinated and organic-walled Foraminifera are to be found in brackish and freshwater environments. Agglutinated species build their test using ambient components but are not commonly regarded as calcifying organisms. An impact of salinity on foraminiferal calcification has been observed in several studies. It seems that Foraminifera are incapable of constructing a fully calcified test in low salinity regimes; they use sea water not only as a source of ions to construct shell, but also as a biomineralisation solution. Thus, the success of ostracods in invading freshwater habitats can be attributed to their development of a more effective mechanism of calcification in low mineralisation waters. The core question of this study is to examine possible causes for the differences in success between the two taxa.

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Ostracodes and Agglutinated Foraminifera as Indicators of Paleoenvironmental Change in an Early Carboniferous Brackish Bay, Atlantic Canada

Cited by 54 publications

References 35 publications

Ostracods from freshwater and brackish environments of the Carboniferous of the Midland Valley of Scotland: the early colonization of terrestrial water bodies

Ostracods from freshwater and brackish environments of the Carboniferous of the Midland Valley of Scotland: the early colonization of terrestrial water bodies

Early Permian Carbonitidae (Ostracoda): ontogeny, affinity, environment and systematics

The Adaptations of the Foraminifera and Ostracoda to Fresh Water Colonisation

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