Upper Llandovery (Telychian) crinoids (Echinodermata) of Devil's Dingle, Buildwas, Shropshire

Donovan, Stephen K.; Lewis, David N.

doi:10.1002/gj.1011

Cited by 8 publications

(6 citation statements)

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“…It is from the Telychian Hughley Shales at Devil's Dingle, near Buildwas, Shropshire (Cocks and Walton 1968, fig. 1; Donovan and Lewis 2005), approximately coeval with the Damery Beds, but possibly extending into the crenulata Biozone. Camerate crinoids have not previously been reported from this locality (Donovan and Lewis 2005).…”

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confidence: 97%

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New Crinoids (Echinodermata) From the Llandovery (Lower Silurian) of the British Isles

Fearnhead¹,

Donovan²

2007

Palaeontology

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“…1; Donovan and Lewis 2005), approximately coeval with the Damery Beds, but possibly extending into the crenulata Biozone. Camerate crinoids have not previously been reported from this locality (Donovan and Lewis 2005).…”

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New Crinoids (Echinodermata) From the Llandovery (Lower Silurian) of the British Isles

Fearnhead¹,

Donovan²

2007

Palaeontology

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“…Myelodactylus penkillensis Donovan & Sevastopulo, 1989, is from the Penkill Formation (Telychian) of the Girvan district, SW Scotland. Myelodactylus convolutus Hall, 1852, is from the Hughley Shales (Telychian) of Devil's Dingle, Buildwas, Shropshire (Donovan & Lewis 2005). Myelodactylus ammonis (Bather, 1893) and M. fletcheri (Salter, 1873) are best known from the Much Wenlock Limestone Formation (Wenlock) of the Dudley area, West Midlands, but also occur elsewhere in the Wenlock (Donovan & Sevastopulo 1989, pp.…”

Section: Myelodactylusmentioning

confidence: 99%

“…There are six nominal species of Myelodactylus in the British Silurian(Donovan & Sevastopulo 1989;Donovan & Lewis 2005). The commonest species are both from the Wenlock, M. ammonis and M. fletcheri.…”

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A field guide to the Silurian Echinodermata of the British Isles: Part 2 – Crinoidea, minor groups and discussion

Donovan

Lewis

Crabb

et al. 2008

PYGS

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Crinoids are the most common and diverse group of echinoderms in the Silurian of the British Isles. This guide describes examples of all nominal crinoid groups recognized from this interval and region (48 genera, about 100 species). In contrast, coronate, edrioasteroid, mitrate and cyclocystoid echinoderms are rare, the first three higher taxonomic groups being represented by a single species each, and the last by two species. Of 145 species of echinoderms in the Silurian of the British Isles, 74 are known from the Much Wenlock Limestone Formation of Wenlock age at Dudley in the West Midlands. For comparison, the most diverse faunas from the Llandovery Series (North Esk Inlier, Pentland Hills, Scotland) and Ludlow Series (Lower Leintwardine Formation, Leintwardine, Herefordshire) consist of only 16 and 17 species, respectively. If the echinoderm-rich succession at Dudley was unknown, the three older series of the Silurian, the Llandovery, Wenlock and Ludlow, would each include about 30 known species of echinoderm. It is the extreme diversity of the Much Wenlock Limestone Formation at Dudley that makes the echinoderm diversities of the Llandovery and Ludlow appear depauperate. (BMNH), but also in those of the British Geological Survey, Keyworth (BGS GSM), the James Mitchell Museum, University College Galway (JMM), the Geological Museum, University of Copenhagen (MGUH), the National Museum of Wales, Cardiff (NMW), and the Sedgwick Museum, Cambridge (SM). Individual taxa are illustrated in Figures 1-15. In order to keep the survey of crinoids to a manageable length, systematic descriptions are mainly at the hierarchical level of genus. This entails examination of 48 genera, including about 100 species (Donovan et al. 2008, tables 16.1-16.3). Where a taxon is monospecific in the study area, it is referred to under the specific epithet. Taxa are listed within the major groups of Palaeozoic crinoids (Simms & Sevastopulo 1993), that is, diplobathrid and monobathrid camerates, cladids, sagenocrinid and taxocrinid flexibles, and disparids. The descriptions are based on the personal observations of the authors, supported by Ramsbottom (1954), Moore & Teichert (1978), Widdison (2001a) and other references as indicated. Unless stated otherwise, columns are assumed to be holomeric.

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“…This family flourished during the Llandovery and Wenlock. Systematic study of early Silurian crinoids advanced considerably beginning in the 1980s with faunas reported from Iowa (Witzke and Strimple, 1981), Ohio (Ausich, 1984a, b, 1985, 1986a, b, c, d, 1987a, b; Ausich and Dravage, 1988; Boyarko and Ausich, 2009), Kentucky (Ausich et al, 2015), New York and Canada (e.g., Eckert, 1984, 1990; Eckert and Brett, 2001; Ausich and Copper, 2010), and Britain and Ireland (e.g., Donovan and Sevastopulo, 1989; Donovan, 1993; Donovan and Harper, 2003; Donovan and Lewis, 2005; Fearnhead and Donovan, 2007a, b; Fearnhead and Harper, 2007; Donovan et al, 2008, 2009, 2010, 2012). All Silurian Petalocrinidae in China are from the Upper Yangtze Epicontinental Sea, South China Block.…”

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confidence: 99%

New taxa and phyletic evolution of the Aeronian (Llandovery, Silurian) Petalocrinidae (Echinodermata, Crinoidea) in Guizhou, South China Block

Mao

Ausich

et al. 2017

J. Paleontol.

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Abstract.-Systematic paleontology of three new species of Petalocrinidae (Crinoidea) are documented from the carbonate-dominated units of the Shihniulan and equivalent Leijiatun formations (Llandovery, Silurian) of the Baisha, Fengxiang, and Shuibatang sections in Guizhou (China). New taxa are from the Upper Yangtze Epicontinental Sea of the South China Block. The new taxa include Petalocrinus stenopetalus new species, Spirocrinus circularis new species, and S. dextrosus new species. They have a narrow spatial and temporal (Aeronian) distribution. Evolutionary patterns of the four genera of Petalocrinidae are outlined based on the specialized characters of the fused arm plates. Phylogenetic analysis was used to assess morphological relationships within the Petalocrinidae. Petalocrinus inferior represents the plesiomorphic condition for the group and nests as a sister group of P. stenopetalus n. sp. and the Spirocrinus species used in this analysis and the clade exclusively comprised of Sinopetalocrinus. The phylogenetic analysis suggests that Petalocrinus, as currently defined, might be a paraphyletic genus.

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Upper Llandovery (Telychian) crinoids (Echinodermata) of Devil's Dingle, Buildwas, Shropshire

Cited by 8 publications

References 14 publications

New Crinoids (Echinodermata) From the Llandovery (Lower Silurian) of the British Isles

New Crinoids (Echinodermata) From the Llandovery (Lower Silurian) of the British Isles

A field guide to the Silurian Echinodermata of the British Isles: Part 2 – Crinoidea, minor groups and discussion

New taxa and phyletic evolution of the Aeronian (Llandovery, Silurian) Petalocrinidae (Echinodermata, Crinoidea) in Guizhou, South China Block

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