Beiträge zur Ostracoden- und Foraminiferen-Fauna der Unteren Süßwassermolasse in der Schweiz und in Savoyen (Frankreich). 2. La Chaux (Kanton Waadt, Schweiz)

Schäfer, Peter; Kälin, Daniel; Reichenbacher, Bettina

doi:10.1007/bf03043421

Cited by 10 publications

(13 citation statements)

References 8 publications

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“…Cypridopsis from the Paleogene and Neogene of Europe (e.g., Keen 1978;Picot 2002;Gebhardt 2004;Schäfer 2005). However, the size of our material is generally larger than that of the cited taxa, with few exceptions (e.g., 0.73 mm, Cypridopsis sp.…”

Section: Mhnf 31991) Resembling Fossil Materials Is Often Figured mentioning

confidence: 74%

“…The tubercle pattern shows a slightly altered, previously unrecorded morphotype of three exclusively dorsal tubercles (''U1 U2 U3''; sensu Carbonnel et al 1985). The size of this species may vary considerably, regarding locality (0.77-0.85 mm, probably up to 0.93 mm; see Carbonnel et al 1985;Picot 2002;Schäfer 2002). Ilycypris essertinesensis occurs in freshwater to slightly brackish Molasse deposits in Fig.…”

Section: Discussionmentioning

confidence: 98%

“…Ilycypris essertinesensis occurs in freshwater to slightly brackish Molasse deposits in Fig. 6 Ergilemys vel Geochelone, left epiplastron in visceral view (MHNF 31961) southern Germany, Switzerland and eastern France, and is recorded from the Late Chattian (Carbonnel et al 1985;Picot 2002), latest Chattian to the earliest Aquitanian (MP29-MN1; Schäfer 2002 …”

Section: Discussionmentioning

confidence: 99%

“…It may, however, be confused with selected other members of the Cypricercinae, since the determination is based solely on external morphology (see revisions of the genera in Savatenalinton and Martens 2009a, b). Schäfer (2002) describes comparable specimens from the Brochene Fluh section (Baselland, Switzerland) near the Chattian-Aquitanian boundary as Strandesia sp. A.…”

Section: Discussionmentioning

confidence: 99%

“…Only fragmentary material has thus far been described from Swiss localities, including La Chaux (MN2a, Aquitanian; USM) and Brochene Fluh (MP29-30, latest Chattian; USM), as Moenocypris sp. (Schäfer 2002(Schäfer , 2005. Moenocypris olmensis from the early Rupelian of the Upper Rhine Graben and the Mainz Basin is shorter and comparably stouter (Triebel 1963;Pirkenseer and Berger 2011).…”

Section: Discussionmentioning

confidence: 99%

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A new Late Agenian (MN2a, Early Miocene) fossil assemblage from Wallenried (Molasse Basin, Canton Fribourg, Switzerland)

Mennecart

Yerly²,

Mojon

et al. 2015

Paläontol Z

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Excavations of two fossiliferous layers in the Wallenried sand- and marl pit produced a very diversified vertebrate fauna. New material allows the reassessment of the taxonomic position of the ruminant taxa Andegameryxandegaviensis and endemic Friburgomeryx wallenriedensis. An emended diagnosis for the second species is provided and additional material of large and small mammals, as well as ectothermic vertebrates, is described. The recorded Lagomorpha show interesting morphological deviations from other Central European material, and probably represent a unique transitional assemblage with a co-occurrence of Titanomys, Lagopsis and Prolagus. Rodentia and Eulipotyphla belong to typical and well-known species of the Agenian of the Swiss Molasse Basin. Abundant small mammal teeth have allowed us to pinpoint the biostratigraphic age of Wallenried to late MN2a. The biostratigraphic age conforms to data derived from the charophyte assemblages and confirms the oldest occurrence of venomous snake fangs. The palaeoenvironmental context is quite complex. Sedimentary structures and fauna (fishes, frogs, salamanders, ostracods) are characteristic for a humid, lacustrine environment within a flood plain system

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Section: Mhnf 31991) Resembling Fossil Materials Is Often Figured mentioning

confidence: 74%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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A new Late Agenian (MN2a, Early Miocene) fossil assemblage from Wallenried (Molasse Basin, Canton Fribourg, Switzerland)

Mennecart

Yerly²,

Mojon

et al. 2015

Paläontol Z

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Early Miocene micropalaeontological record of the Aspiras Basin (Kastamonu), north‐west Anatolia, Turkey

2020

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This study presents the micropalaeontological data (palynomorphs and ostracods) including index taxa to assign a precise age, and the palaeoecological evolution of the Aspiras Basin, south‐east Kastamonu, northern Anatolia. The succession may informally be divided into a lower part including rich lignites interbedded with fine‐grained sediments and an upper part which comprises lignite‐free deposits such as mudrocks with dense gypsum and rare limestones. The sediments of the lower part were deposited in a wetland (i.e. peat‐forming environment) showing oscillations of the lake level, whereas the upper part indicates the shoaling or closing phase of the lake. Early Miocene age is assigned to the Aspiras Basin due to the presence of index taxa such as Leiotriletes maximus, Dicolpopollis kockelii, Intratriporopollenites instructus, Caryapollenites simplex, and ostracods Pseudocandona praecox and Potamocypris gracilis. Moreover, a new species of ostracod, Heterocypris aspirasensis, has been discovered. In the lowermost part of the succession, palynomorph spectra are dominated by spores such as Leiotriletes maxoides, L. maximus, and Verrutacosporites alienus while diverse pollen types, notably conifer pollen, attain high abundances further up in the succession. In the forested environment, the mixed mesophytic plants were less diverse. Low quantities of herbaceous taxa such as Ephedra sp., Poaceae, Amaranthaceae, Asteraceae‐Asteroideae, and Asteraceae‐Cichorioideae indicate the limited occurrence of open areas. During the Early Miocene, a warm and moist climate prevailed according to quantitative palaeoclimate data and the presence of the mega‐mesothermic taxa such as Taxodioideae, Mastixiaceae, Engelhardia, Sapotaceae, and Calamus.

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Late Early Miocene lake deposits near Mauensee, central Switzerland: Fish fauna (otoliths, teeth), accompanying biota and palaeoecology

Jost¹,

Kälin²,

Schulz‐Mirbach

et al. 2006

Eclogae geol. Helv.

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The Mauensee section in the Molasse Basin of central Switzerland exposes a 3.7 m thick lacustrine sequence intercalated in marine siliciclastic deposits of the Upper Marine Molasse. From this sequence, which is Karpatian in age, a teleost fish fauna (otoliths, teeth) is described that consists of 15 species, including Cyprinidae, Mugilidae, Atherinidae, Cyprinodontidae, Gobiidae, and Channidae. In addition, charophytes, vascular plant remains, bivalves, gastropods, ostracods, amphibia, reptilia, and mammals are recorded. Palaeoecological analyses indicate that the fishes lived in a large, oligohaline, warm, and oligo-to mesotrophic lake with a water depth of five metres or more. Sedimentation rate estimates suggest that the lake existed for approximately 18.000 to 20.000 years. A remarkable enrichment of otoliths and teeth in the uppermost part of the lacustrine sequence is indicative of increased fish mortality, due perhaps to decreasing water-levels and seasonal occurrences of anoxic conditions. The persistence of a large lake in the Molasse Basin of central Switzerland during the Karpatian was certainly favoured by low sedimentation rates during this period of time. ZUSAMMENFASSUNGDas im Molassebecken der Zentralschweiz gelegene Mauensee-Profil schließt eine 3.7 m mächtige lakustrine Gesteinsfolge innerhalb der marinen siliziklastischen Sedimente der Oberen Meeresmolasse auf, die in das Karpatium zu stellen ist. Die Teleostei (Otolithen, Zähne) aus den lakustrinen Sedimenten werden beschrieben. Die Fischfauna umfasst 15 Arten, darunter Cyprinidae, Mugilidae, Atherinidae, Cyprinodontidae, Gobiidae und Channidae. Außer-dem wurden Charophyten, Reste höherer Pflanzen, Bivalvia, Gastropoden, Ostracoden, Amphibien, Reptilien und Säugetiere nachgewiesen. Die paläo-ökologische Interpretation lässt auf einen ausgedehnten, oligohalinen, warmen, oligo-bis mesotrophen See schließen, der eine Wassertiefe von mindestens fünf Metern erreichte. Die Kalkulation der Sedimentationsraten nach Literaturdaten weist auf einen Zeitraum von 18.000-20.000 Jahren für die Existenz des Gewässers hin. Im oberen Abschnitt der lakustrinen Gesteinsfolge ist eine extreme Anreicherung von Otolithen und Fischzähnen zu verzeichnen, die auf eine erhöhte Mortalitätsrate der Fische hinweist. Möglicherweise sind die Fischsterben auf ein Absinken des Wasserspiegels und damit verbundene saisonale anoxische Ereignissen zurückzuführen. Die Existenz eines ausgedehnten Sees im Molassebecken der Zentralschweiz während des Karpatium wurde vermutlich dadurch begünstigt, dass die Sedimentationsraten zu dieser Zeit sehr gering waren. ecosystems have not been documented to date from other regions of the Alpine Molasse Basin. Here we present the biota of a Karpatian lake located in the Molasse Basin of central Switzerland. The fish otoliths are described in detail, the remaining biota is listed in Table 1. Moreover, the palaeoecology of the lake ecosystem and unusual abundance of fish remains are discussed. The age of this lake was determined biostratigraphically...

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Beiträge zur Ostracoden- und Foraminiferen-Fauna der Unteren Süßwassermolasse in der Schweiz und in Savoyen (Frankreich). 2. La Chaux (Kanton Waadt, Schweiz)

Cited by 10 publications

References 8 publications

A new Late Agenian (MN2a, Early Miocene) fossil assemblage from Wallenried (Molasse Basin, Canton Fribourg, Switzerland)

A new Late Agenian (MN2a, Early Miocene) fossil assemblage from Wallenried (Molasse Basin, Canton Fribourg, Switzerland)

Early Miocene micropalaeontological record of the Aspiras Basin (Kastamonu), north‐west Anatolia, Turkey

Late Early Miocene lake deposits near Mauensee, central Switzerland: Fish fauna (otoliths, teeth), accompanying biota and palaeoecology

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