Ostracoda from the Ellis Bay Formation (Ordovician), Anticosti Island, Quebec

Copeland, M J

doi:10.4095/102293

Cited by 10 publications

(19 citation statements)

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“…5m) and Levisulculus michiganensis (Fig. 5y) which closely resembles Copeland's (1970Copeland's ( ,1973 figures of 'Bythocypris' lindstroemi and the similar 'Bythocypris' cylindrica (Hall) sensu Copeland (1970). 4).…”

Section: Biostratigraphy and Correlationsupporting

confidence: 61%

“…teres (Fig. Most of these faunas are too poorly preserved to allow comparison with ostracode faunas from similarly aged formations in N America (such as the Maquoketa Shale [Spivey 1939;Keenan 1951], Ellis Bay and Vaureal formations [Copeland 1970[Copeland , 1973, and Whittaker Formation [Copeland 1989]). 5m) and Levisulculus michiganensis (Fig.…”

Section: Biostratigraphy and Correlationmentioning

confidence: 99%

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Scottish Ordovician ostracodes: a review of their palaeoenvironmental, biostratigraphical and palaeobiogeographical significance

Williams

Floyd

Miller

et al. 2000

Earth and Environmental Science Transactions of the Royal Socie

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Ostracodes have a wide geographical distribution in the Ordovician of Scotland. They are known from the Southern Uplands, the Girvan district, the Highland Border region and the Inner Hebrides. Overall, more than forty species are recorded. They occur in clastic and carbonate rocks indicative of a range of shallow to deeper marine-shelf environments. Though many of the faunas are allochthonous, broad patterns of ostracode palaeoenvironmental distribution can be elucidated, and elements of the shallow marine Leperditella and open marineshelf Anisocyamus associations (previously recorded from N America) are present. Indigenous faunas are absent from the deep marine sediments of the Southern Uplands Northern Belt. Ostracodes are known from the Arenig, Llanvirn, Caradoc and Ashgill series in Scotland; those of the latter two series have widest biostratigraphical value. In the Girvan district the Caradoc species 'Ctenobolbina' ventrospinosa, Krausella variata, Balticella deckeri and Monoceratella teres have correlative value with N America, whilst the Ashgill species Kinnekullea comma appears to be a locum for the anceps graptolite Biozone in Britain, Ireland and possibly the eastern Baltic. The ostracodes are of typical Laurentian affinity, but show progressive generic links with the Baltic region during the late Llanvirn-Caradoc interval, and by Ashgill times display species-level links with southern Britain and Ireland. These distributional patterns suggest approaching geographical proximity for the early Palaeozoic continents of Laurentia, Baltica and Avalonia, and the ability of some Ordovician ostracodes to cross the Iapetus Ocean.

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Section: Biostratigraphy and Correlationsupporting

confidence: 61%

Section: Biostratigraphy and Correlationmentioning

confidence: 99%

Scottish Ordovician ostracodes: a review of their palaeoenvironmental, biostratigraphical and palaeobiogeographical significance

Williams

Floyd

Miller

et al. 2000

Earth and Environmental Science Transactions of the Royal Socie

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“…In contrast, Ashgill age ostracods from the Baltic region (e.g. Keenan, 1951;Copeland, 1970Copeland, , 1973Copeland, , 1977aCopeland, ,b, 1989 have undergone extensive evaluation and have been shown to have local stratigraphical value. Keenan, 1951;Copeland, 1970Copeland, , 1973Copeland, , 1977aCopeland, ,b, 1989 have undergone extensive evaluation and have been shown to have local stratigraphical value.…”

Section: Introductionmentioning

confidence: 99%

Upper Ordovician ostracods from the Cautley district, northern England: Baltic and Laurentian affinities

et al. 2001

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The Cautley Mudstone Formation and Cystoid Limestone Member of the Ashgill Formation (Windermere Supergroup; Ashgill Series), from the Cautley district of northern England, has yielded an ostracod fauna of more than 30 species. Many of these have short ranges, permitting recognition of stratigraphically successive Pusgillian-lower Cautleyan, middle-upper Cautleyan, and Rawtheyan ostracod faunas. Several species are also known from the upper Ordovician of North America (Anticosti Island), Scotland (Girvan district) and the Baltic region (Estonia, glacial erratic boulders of northern Germany), providing evidence to correlate upper Ordovician successions in these areas. The ostracods include abundant podocopes, at some horizons accounting for more than 80 % of the fauna. Binodicopes are also common, but palaeocopes are rare. Assemblages are typical of a clastic dominated open marine shelf setting. Diversity at most horizons is low (c. 3-5 species), but reaches a peak of between 13-14 species in middle Cautleyan horizons. Lower diversity at Pusgillian and Rawtheyan horizons coincides with the encroachment of deeper marine-shelf facies which were probably hostile to Ordovician benthonic ostracods. Some of the ostracods (particularly Aechmina) have distributions suggesting tolerance of a range of mid-to deep shelf benthonic palaeoenvironments, but none were pelagic. During Ashgill times the Cautley district (part of palaeocontinental Avalonia) was replete with ostracod genera and species which also occur in the Baltic region (palaeocontinental Baltica; more than 90 % generic similarity) and to a lesser, but nonetheless significant extent in North America and Scotland (parts of palaeocontinental Laurentia). Such trans-Tornquist Sea and Iapetus Ocean distributional patterns add to previous ostracod data that support models which show palaeogeographical proximity of Avalonia and Baltica, and Avalonia and Laurentia, by Ashgill times. The widely cited observation, that trans-Iapetus ostracod faunas remained strictly provincial until the midor late Silurian, cannot be sustained. § Author for correspondence: m.williams@bgs.ac.uk

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“…Ostracod distribution from Laurentia (Maysvillian-base of Gamachian Stage) is documented from Iowa (Spivey 1939, Levinson 1951, Missouri (Keenan 1951), Minnesota (Burr & Swain 1965, Swain 1987, Kentucky (Warshauer & Berdan 1982), from the Canadian Whittaker Formation (Copeland 1977, Copeland 1989 and Vauréal and Ellis Bay formations of Anticosti Island, Quebec (Bolton 1970;Copeland 1970Copeland , 1973Barnes & McCracken 1981), which are recently considered as probably pre-Hirnantian (more in Meidla et al 2013 and references therein). Williams et al (2001) documented ostracod assemblages of Avalonia (Pusgillian-Rawtheyan Stage) from the Cautley Mudstone Formation of northern England.…”

Section: Palaeobiogeography and Biodiversitymentioning

confidence: 99%

“…There are three ostracod genera common for all studied regions, two of them are geographically widespread binodicopes, namely Aechmina and Pseudulrichia, and one is the palaeocope genus Platybolbina. Another conspecific binodicope ostracod recorded from both Avalonia (Williams et al 2001) and Laurentia (Copeland 1973) is the species Spinigerites unicornis (Ulrich, 1879) sensu Copeland (1973). Williams et al (2001) also consider British species Warthinia cf.…”

mentioning

confidence: 99%

Middle Katian/lowermost Hirnantian ostracods from the Prague Basin (Czech Republic): Diversity responses to the climatic changes

Lajblová¹,

Kraft²

2018

Bull. Geosci.

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Ostracoda from the Ellis Bay Formation (Ordovician), Anticosti Island, Quebec

Cited by 10 publications

References 0 publications

Scottish Ordovician ostracodes: a review of their palaeoenvironmental, biostratigraphical and palaeobiogeographical significance

Scottish Ordovician ostracodes: a review of their palaeoenvironmental, biostratigraphical and palaeobiogeographical significance

Upper Ordovician ostracods from the Cautley district, northern England: Baltic and Laurentian affinities

Middle Katian/lowermost Hirnantian ostracods from the Prague Basin (Czech Republic): Diversity responses to the climatic changes

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