A new brachiopod Discinisca ferroviæ from the Woolwich beds

Muir-Wood, Helen M.

doi:10.1016/s0016-7878(28)80004-6

Cited by 7 publications

(7 citation statements)

References 5 publications

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“…Subsequent authors (Muir-wood, 1928;Stenzel, 1965) recognized only two groups: those sculptured by radial ribs and those without radial ribs. Stenzel (1965) erected a new subgenus for the radially sculptured group, Discradisca (type species Orbicula antillarum d 'Orbigny, 1845).…”

Section: Systematic Paleontologymentioning

confidence: 99%

“…Other "discinids" were confused with other invertebrate groups, such as patellid gastropods (Muir-wood, 1928;Hatai & Hayasaka, 1965). No patellids or morphologically similar gastropod groups (e.g., fissurellids and calyptraeids)…”

Section: Taphonomic Implicationsmentioning

confidence: 99%

“…According to Schuchert (1911) and Muir-wood (1928), discinids are indicators of warm to tropical waters.…”

Section: Paleoenvironmental Implicationsmentioning

confidence: 99%

“…Dall (1920) recognized three species-groups within Discinisca , separated by the presence/absence of radial sculpture, shell size, and shape. Subsequent authors (Muir-Wood, 1928; Stenzel, 1965) recognized only two groups: those sculptured by radial ribs and those without radial ribs. Stenzel (1965) erected a new subgenus for the radially sculptured group, Discradisca (type species Orbicula antillarum d'Orbigny, 1845).…”

Section: Systematic Paleontologymentioning

confidence: 99%

“…Living discinids are known from the western Atlantic coasts from Nicaragua to Brazil, the Caribbean Sea, the Eastern Pacific coasts from Chile to California, and the western Pacific coasts from Japan to Philippines (Dall, 1920). The Cenozoic record of the Discinidae includes regions such as the United Kingdom (wood, 1874;Muir-wood, 1928Muir-wood, , 1939, North America (Conrad, 1834(Conrad, , 1845Dall, 1908;Gardner, 1928;Hertlein & Grant, 1944), Europe (Čtyroký & Fejfar, 1963; 204 Radwańska & Radwański, 1984, 1989, 2003Bitner & Cahuzac, 2013;Dulai, 2017;Dulai & von der Hocht, 2020;Bitner & Müller, 2022), Japan (Hatai & Hayasaka, 1965), and New Zealand (Lee, 1987). Few reports of this family are known from the Cenozoic of South America, restricted to the Miocene of Uruguay and Entre Ríos, Argentina (Figueiras, 1980;Pérez et al, 2013).…”

mentioning

confidence: 99%

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First Discinid Brachiopods (Brachiopoda: Lingulida) from the Cenozoic of Patagonia (Gaiman Formation, Lower Miocene, Argentina)

et al. 2023

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Discinids are a group of inarticulate brachiopods with organophosphatic shells and a very poor fossil record. We report for the first time the presence of this family in the Cenozoic of Patagonia, represented by two new species: Discinisca porvenir sp. nov. and Discinisca messii sp. nov., both found in marine deposits of the Gaiman Formation (Lower Miocene) in Chubut province, Argentina. Specimens come from four localities: Bryn Gwyn, Cañadón del Puma, Isla Escondida, and Punta Loma. The first species, D. porvenir sp. nov., presents a shell with subcircular to subtrapezoidal outline in dorsal view and maximum width located slightly anterior, apex near to the last quarter of the total valve length, and external sculpture formed by narrow concentric bands with irregular edges. In contrast, the second species, D. messii sp. nov., shows a valve with subcircular to circular outline in dorsal view with apex placed near to posterior margin, and external sculpture formed by concentric bands with a rounded triangular profile in transverse section. The new species seem to be related to the living D. lamellosa and D. laevis, respectively, both with a western South American distribution. The Gaiman Formation includes phosphatic nodules and abundant cases of well-preserved phosphatic vertebrate remains. Due to this, and the biostratinomic conditions deduced for vertebrates, the preservation of the brachiopods could be favoured.

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Section: Systematic Paleontologymentioning

confidence: 99%

Section: Taphonomic Implicationsmentioning

confidence: 99%

“…According to Schuchert (1911) and Muir-wood (1928), discinids are indicators of warm to tropical waters.…”

Section: Paleoenvironmental Implicationsmentioning

confidence: 99%