Microbrachiopods and the end‐Ordovician event

Wright, Anthony D.; McClean, Anne Marie

doi:10.1080/10292389109380395

Cited by 11 publications

(14 citation statements)

References 7 publications

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“…Brachiopod ecology has long been one of the debated subjects of increasing interest (Rudwick 1970; Holmer 1989; Jin et al . 1991; Wright and Mcclean 1991; Popov 1992, 1995; Emig 2000; Ushatinskaya 2001). Cambrian brachiopods show several types of substrate relationship (Ushatinskaya 2001), including pedicle‐anchoring, free‐lying, cemented epifaunal, infaunal, quasi‐infaunal, and interstitial, as well as possibly pseudoplanktonic.…”

Section: Introductionmentioning

confidence: 99%

Morpho‐anatomical differences of the Early Cambrian Chengjiang and Recent lingulids and their implications

et al. 2005

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Since the publication of Darwin's theory of evolution in 1859, lingulids have probably been the most widely quoted examples of arrested evolution. This, to some degree, may be because few anatomical features are impressed either on or inside valves so these may not adequately reflect the extent of change incurred during lingulid evolution. Two lingulid brachiopods, Lingulella chengjiangensis and Lingulellotreta malongensis, from the Early Cambrian Chengjiang Lagerstätte (Yunnan, South China) show preservation of a series of soft parts, notably the lophophores, setae mantle canals and perfectly impressed visceral region, which are vital to understanding the evolution and lifestyle of brachiopods. Analysis of the valve interiors favours the claim that an epifaunal mode of life could be a plesiomorphic state in contrast to the infaunal one of modern lingulids. Based on these fossils, the three‐pseudosiphon formation of setae found in Recent lingulids is proposed to be an apomorphy derived as an adaptation to an infaunal lifestyle. Comparison between the interior of the fossils with that of modern lingulids does little to support the widespread notion that the morphology of this lineage has remained remarkably constant since at least the early Palaeozoic.

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Section: Introductionmentioning

confidence: 99%

Morpho‐anatomical differences of the Early Cambrian Chengjiang and Recent lingulids and their implications

et al. 2005

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“…By contrast, there is only a single publication on the Mid Ordovician micromorphic linguliforms from South China, and no available data from Siberia and North China. Moreover, a considerable amount of data on the Ordovician linguliforms unfortunately remains unpublished, including descriptions of Late Ordovician microbrachiopods from Ireland (Avalonia), presented in an unpublished PhD thesis by McClean (Wright & McClean 1991), and of the Mid Ordovician faunas of the Argentinean pre-Cordillera.…”

Section: Linguliform Brachiopodsmentioning

confidence: 99%

Chapter 10 Biogeography of Ordovician linguliform and craniiform brachiopods

Popov

Holmer

Bassett

et al. 2013

Memoirs

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“…(, ). Excluded data thus include the Late Ordovician Avalonian brachiopod faunas from Ireland referred to in Wright and McClean (), which are unpublished, and a number of faunas from Laurentia (e.g. Robson & Pratt ; Robson et al .…”

Section: Methodsmentioning

confidence: 99%

“…Using a single data source (the Treatise on Invertebrate Paleontology) provides important advantages of consistency in treatment of palaeogeographic regions and chronostratigraphic timescales; for these reasons, we have not incorporated those faunas published after the Treatise, other than those detailed in the monograph of Sutton et al (1999Sutton et al ( , 2000. Excluded data thus include the Late Ordovician Avalonian brachiopod faunas from Ireland referred to in Wright and McClean (1991), which are unpublished, and a number of faunas from Laurentia (e.g. Robson & Pratt 2001;Robson et al 2003;Holmer et al 2005;Streng & Holmer 2006;Freeman & Miller 2011).…”

Section: Methodsmentioning

confidence: 99%

Lingulate brachiopods and the Early Palaeozoic history of the Iapetus Ocean

Winrow

Sutton

2014

LET

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The history of the Iapetus Ocean in the Early Palaeozoic is well‐established, and faunal distribution has contributed significantly to the development of this knowledge; however, lingulate brachiopods have traditionally been considered to be of little utility in assessing palaeobiogeography. The distribution of lingulate brachiopods across the Iapetus region is analysed using a number of similarity indices and other statistical measures. This analysis shows a clear palaeobiogeographic signal where lingulate faunas are sufficiently diverse, reflecting the history of the Iapetus ocean and the relative separation of Laurentia and Baltica through the Cambrian and Ordovician. Lingulate faunas on Avalonia are, however, low in diversity and show relatively high endemism; this renders them of little use in assessing the separation of Avalonia from other areas. Evidence of earlier increases in faunal similarity in lingulate faunas between continents, compared to other fossil groups, provides confirmatory evidence that Palaeozoic lingulates had long‐lived planktotrophic larvae.

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Microbrachiopods and the end‐Ordovician event

Cited by 11 publications

References 7 publications

Morpho‐anatomical differences of the Early Cambrian Chengjiang and Recent lingulids and their implications

Morpho‐anatomical differences of the Early Cambrian Chengjiang and Recent lingulids and their implications

Chapter 10 Biogeography of Ordovician linguliform and craniiform brachiopods

Lingulate brachiopods and the Early Palaeozoic history of the Iapetus Ocean

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