Upper Kazanian (Middle Permian) gastropods of the Volga–Urals Region

Мазаев, А. В.

doi:10.1134/s0031030115080018

Cited by 21 publications

(24 citation statements)

References 22 publications

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“…Eirlysia is typically a Permian genus with several species described by Batten () from south‐west USA and by Mazaev () from European Russia. However, Batten () described a single specimen from the earliest Pennsylvanian (Morrowan) of Texas which is of similar age and morphology to the Pot Bank Quarry occurrence.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…Eirlysia lens Mazaev, from the middle Permian of the Volga–Urals region of Russia has a similar whorl profile to E. ceramicorum , although the base is less inflated and the selenizone is ornamented with prominent lunulae and a median groove. Eirlysia nodata Mazaev, , from the middle Permian of the Volga–Urals region, has more shouldered whorls and the transition from outer whorl surface to the base is angular.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…Batten () described the early whorls of the type species Eirlysia exquisita Batten, as being simple and unornamented. In exceptionally well‐preserved specimens of Eirlysia lens Mazaev, , from the middle Permian of the Kirov region, a swollen initial stage is followed by one or two smooth whorls, and then a whorl where spiral ornamentation dominates before the selenizone appears abruptly between bounding cords (Mazaev , pl. 8, fig.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

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Gastropods from the Carboniferous (Namurian) of Congleton Edge, Cheshire,UK

Peel

2016

Papers in Palaeontology

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Gastropod assemblages of late Carboniferous age (Namurian; Chokierian–Alportian) from the Morridge Formation at Pot Bank Quarry, Congleton Edge, Cheshire, contain 27 species, the most diverse gastropod fauna known from the Silesian of the southern UK. Chokierian sandstones yield a sparse assemblage of mainly high‐spired Stegocoelia and bivalves, but flooding associated with the Hudsonoceras proteus marine band (basal Alportian) introduced a diverse invertebrate fauna in which the gastropod fraction is dominated by the bellerophontoideans Bellerophon, Retispira, Euphemites and Patellilabia, and the eotomarioid Angyomphalus. A later, previously unrecognized marine assemblage of probable Alportian age contains numerous small pleurotomariiform gastropods, but bellerophontoideans are less common and Angyomphalus is absent. In formal international usage the assemblages are of Pennsylvanian (Bashkirian Stage) age. One new genus Liraloron cornoviorum gen. et sp. nov. and the following new species are described: Retispira mowensis, Patellilabia britannica, Angyomphalus congletonensis, Neilsonia coatesi, N. ganneyica, Eirlysia ceramicorum, Meekospira acrolopha.

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Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

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Gastropods from the Carboniferous (Namurian) of Congleton Edge, Cheshire,UK

Peel

2016

Papers in Palaeontology

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“…However, Mazaev (2015) makes a case for Palaeozoic patellogastropods, and D. R. Lindberg (pers. comm.…”

Section: Taxonomic Assignments and Times Of Originmentioning

confidence: 99%

The limpet form in gastropods: evolution, distribution, and implications for the comparative study of history

Vermeij

2016

Biol. J. Linn. Soc.

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The limpet form -a cap-shaped or slipper-shaped univalved shell -convergently evolved in many gastropod lineages, but questions remain about when, how often, and under which circumstances it originated. Except for some predation-resistant limpets in shallow-water marine environments, limpets are not well adapted to intense competition and predation, leading to the prediction that they originated in refugial habitats where exposure to predators and competitors is low. A survey of fossil and living limpets indicates that the limpet form evolved independently in at least 54 lineages, with particularly frequent origins in early-diverging gastropod clades, as well as in Neritimorpha and Heterobranchia. There are at least 14 origins in freshwater and 10 in the deep sea, with known times ranging from the Cambrian to the Neogene. Shallow-water limpets are most diverse at midlatitudes; predation-resistant taxa are rare in cold water and absent in freshwater. These patterns contrast with the mainly Late Cretaceous and Caenozoic warm-water origins of features such as the labral tooth, enveloped shell, varices, and burrowing-enhancing sculpture that confer defensive and competitive benefits on molluscs.

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“…-Knight et al (1960) and Batten (1995) placed Baylea in Raphistomatidae Koken, 1896but Mazaev (2015 placed it in Phymatopleuridae.…”

Section: Euomphalus? Spmentioning

confidence: 99%