The discovery of Eifelian ammonoids in the Central Kyzylkum Desert (Aristantau Mountains, Uzbekistan)

Nikolaeva, Svetlana; Kim, I. A.; Salimova, Firuza; Karimova, F. S.; Konovalova, V. A.

doi:10.1134/s003103011703008x

Cited by 1 publication

(4 citation statements)

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“…Subanarcestes is debated, and a consensus is lacking (see e.g., Becker & House, 2000;Ebbighausen et al, 2011 andNikolaeva et al, 2017 for overview and discussions). Korn & Klug (2002) placed it together with Sobolewia Wedekind 1918 andHolzapfeloceras Miller 1932 in the Family Sobolewiidae House, 1989.…”

Section: Remarks the Family-level Classification Of The Genusmentioning

confidence: 99%

“…Ebbighausen et al (2011 placed it with Werneroceras Wedekind, 1918 in the Subfamily Werneroceratinae Erben, 1964(Family Werneroceratidae Erben, 1964. Here, awaiting further studies, we follow Nikolaeva et al (2017), the most recent paper discussing it, in leaving it in the Family Anarcestidae Steinmann, 1890. Schindewolf, 1933 (Figs 3A-I, 4) 1908 Nautilus Breyn, Maillieux, p. 175.…”

Section: Remarks the Family-level Classification Of The Genusmentioning

confidence: 99%

“…In particular, the uw/dm and IZR plots allow to easily separate type species Subanarcestes macrocephalus from all other species of the genus. Since, only Subanarcestes aristanensis Nikolaeva in Nikolaeva et al, 2017 was added, which both for size of the umbilicus (uw/dm plot, Klug's 2002 fig. 44) and as the rate of imprint (IZR plot, Klug's 2002 fig.…”

Section: Subanarcestes Macrocephalusmentioning

confidence: 99%

“…Geographically, it is known from Germany (Rhenish Mountains), France (Armorican Massif), Spain (Cantabrian Mountains and Pyrenees), Morocco (Tafilalt, northern Maider, eastern Zagora Graben, and Dra Valley), Algeria (Ougartha and Saoura Valley), Russia (Northern Urals) and Uzbekistan (Aristantau Mountains) (Klug, 2002, Ebbighausen et al, 2011and Nikolaeva et al, 2017 for discussion and references), and now also Belgium.…”

Section: Subanarcestes Macrocephalusmentioning

confidence: 99%

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On the first Belgian record of the Eifelian (Middle Devonian) ammonoid cephalopod Subanarcestes (Suborder Anarcestina)

GOOLAERTS

2023

Geol. Belg.

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Ammonoid cephalopods are extremely rare in the Lower and Middle Devonian sedimentary rocks of Belgium, which contrasts with the neighboring sedimentary basins. However, searches in old collections and recent collecting efforts show that ammonoids do occur in these beds in Belgium, which allows to enlarge our knowledge of Lower and Middle Devonian ammonoid occurrences. Here, a record of the Eifelian (Middle Devonian) anarcestid ammonoid genus Subanarcestes is described for the first time from Belgium based on a specimen from the Jemelle Formation (Chavées Member). This specimen was collected more than a century ago by Eugène Maillieux at Trou Bodet near Couvin. It laid unrecognized as an ammonoid cephalopod for many decades in the collections of the Royal Belgian Institute of Natural Sciences, while being previously identified as Cryptoceras or ‘Nautilus’ fossil, which if correct, constituted Belgium’s oldest Nautilida fossil. Micro-CT imaging greatly helped in the taxonomic assignment of the specimen.

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