New record of Discradisca (Brachiopoda: Discinidae) from the Early Miocene of the Aquitaine Basin, south-western France

Bitner, Maria Aleksandra; Cahuzac, Bruno

doi:10.1016/j.crpv.2012.10.001

Cited by 5 publications

(15 citation statements)

References 13 publications

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“…Remarks The material, very limited and poorly preserved, resembles Discinisca , but ribbed ornamentation indicates its attribution to the related genus Discradisca (see discussion in Bitner and Cahuzac 2013 , and Dulai 2013 ). The shell is thin and very small.…”

Section: Systematic Partmentioning

confidence: 96%

Brachiopods from the Silberberg Formation (Late Eocene to Early Oligocene) of Atzendorf, Central Germany

Bitner

Müller

2015

Paläontol Z

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Six brachiopod species, i.e., Discradisca sp., Cryptopora sp., Pliothyrina sp. cf. P. grandis (Blumenbach, 1803), Terebratulina tenuistriata (Leymerie, 1846), Rhynchonellopsis nysti (Bosquet, 1862), and Orthothyris pectinoides (von Koenen, 1894), have been identified in the Late Eocene to Early Oligocene Silberberg Formation of Atzendorf, Central Germany. The species R. nysti and O. pectinoides dominate the studied assemblage. Rhynchonellopsis is here transferred from the family Cancellothyrididae to Chlidonophoridae because it has a loop without united crural processes. Orthothyris pectinoides has a brachial skeleton of chlidonophorid type, but its transverse band is incomplete. In species composition, the assemblage from Atzendorf differs from other Paleogene and Neogene European assemblages by the absence of megathyridids and dominance of chlidonophorids, indicating a relatively deep environment.

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Section: Systematic Partmentioning

confidence: 96%

Brachiopods from the Silberberg Formation (Late Eocene to Early Oligocene) of Atzendorf, Central Germany

Bitner

Müller

2015

Paläontol Z

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“…A similar discinid species, Discradisca multiradiata (de Morgan, 1915) is known also from the Miocene of France (Dollfuss & Dautzenberg 1901;de Morgan 1915;Dulai 2013;Bitner & Cahuzac 2013); however, it has more numerous (80-100) fi ne, beaded ribs, and its apex is situated more regularly in central position. Th e generic attribution of the species polonica to Discradisca was discussed in detail by Dulai (2013) and Bitner & Cahuzac (2013). D. polonica seems to be restricted to shallow water environments: it was described from the littoral deposits of the Korytnica Basin (Radwańska & Radwański 1984), and both Hungarian localities also refer to shallow habitats in the palaeoenvironmental reconstructions (e.g., Moissette et al 2007;Selmeczi 1996).…”

Section: Methodsmentioning

confidence: 99%

“…Scale bar: 3 mm Fragmenta Palaeontologica Hungarica 34, 2017 is ornamented only by concentric growth lines (Łomnicki 1897;Friedberg 1921;Schmid et al 2001;Radwański & Wysocka 2004;Dulai 2015). A similar discinid species, Discradisca multiradiata (de Morgan, 1915) is known also from the Miocene of France (Dollfuss & Dautzenberg 1901;de Morgan 1915;Dulai 2013;Bitner & Cahuzac 2013); however, it has more numerous (80-100) fi ne, beaded ribs, and its apex is situated more regularly in central position. Th e generic attribution of the species polonica to Discradisca was discussed in detail by Dulai (2013) and Bitner & Cahuzac (2013).…”

Section: Methodsmentioning

confidence: 99%

First record of Discinidae brachiopods from the Miocene of Hungary

Dulai¹

2017

Fragm Palaeont Hung

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-Although Discinidae brachiopods are rare components of Neogene benthic assemblages, several records were published from the Miocene of the Central Paratethys (Poland, Ukraine, Czech Republic, Austria, and Bulgaria). However, until now discinid brachiopods have never been mentioned from Hungary. Recently, remains of one species, Discradisca cf. polonica (Radwańska et Radwański, 1984) were found at two Middle Miocene (Badenian) localities of the Bakony Mts. Two fragments were discovered in old washed samples (Pusztamiske Formation) from the Szabó sand pit of Várpalota in the collection of the Hungarian Natural History Museum, Budapest. Th e same species is much more numerous in a new material collected at Nyirád locality. Here hundreds of very eroded and fragmentary discinids were found in the Pusztamiske Formation, while the overlying Leitha Limestone Formation contains less, but sometimes more or less complete specimens. D. polonica seems to be restricted to shallow water environments. Th e Hungarian record is one of the most southern known occurrences of discinid brachiopods in the Central Paratethys (together with the very limited Bulgarian material). With 22 fi gures.

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“…The ribbed neatic shell ( Fig. 2B) allows attribution to the genus Discradisca (see discussion in Bitner & Cahuzac 2013). The larval (protegulum) shell is smooth without growth lines, reaching about 0.5 mm, while the postlarval (brephic) shell is smooth but sculptured by numerous growth lines ( Fig.…”

Section: Discradisca Spmentioning

confidence: 99%

“…-Late Eocene (Priabonian) of Dnipropetrovsk, Ukraine. Several species of Discradisca have been recognized in the Paleogene and Neogene of Europe (see Bitner & Cahuzac 2013;Dulai 2013Dulai , 2015Bitner & Müller 2015;Bitner & Motchurova-Dekova 2016).…”

Section: Discradisca Spmentioning

confidence: 99%