Winfried Werner

Bayerische Staatssammlung für Paläontologie und Geologie

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Franz T. Fürsich

Friedrich-Alexander-Universität Erlangen-Nürnberg

Simon Schneider

Ludwig-Maximilians-Universität München

Reinhold Leinfelder

Freie Universität Berlin

Martin Nose

Bayerische Staatssammlung für Paläontologie und Geologie

Dieter U. Schmid

Ludwig-Maximilians-Universität München

Baran Karapunar

Ludwig-Maximilians-Universität München

Christian Gaillard

Centre National de la Recherche Scientifique

Alexander Nützel

Bayerische Staatssammlung für Paläontologie und Geologie

Pierre Hantzpergue

Centre National de la Recherche Scientifique

Robert Darga

Museum für Naturkunde

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Columbia University

New York University Press

Centre National de la Recherche Scientifique

Museum für Naturkunde

Ludwig-Maximilians-Universität München

Bayerische Staatssammlung für Paläontologie und Geologie

Université de Lorraine

Université Claude Bernard Lyon 1

Friedrich-Alexander-Universität Erlangen-Nürnberg

École Nationale Supérieure des Mines de Nancy

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JPA volume 95 issue 6 Cover and Back matter

Journal of Paleontology (2021)

Richard K. Bambach A. J. Boucot Rodney Feldman Carrie E. Schweitzer Elvira Gastaldo Th E Family

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Content (measure theory)

10.1017/jpa.2021.104

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Citations (0)

Sedimentology, taphonomy, and palaeoecology of a laminated plattenkalk from the Kimmeridgian of the northern Franconian Alb (southern Germany)

Palaeogeography Palaeoclimatology Palaeoecology (2006)

Franz T. Fürsich Winfried Werner Simon Schneider Matthias Mäuser

Taphonomy

Paleoecology

Lamination

Biota

10.1016/j.palaeo.2006.07.007

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Citations (47)

Drilling predation on Early Jurassic bivalves and behavioral patterns of the presumed gastropod predator—evidence from Pliensbachian soft-bottom deposits of northern Germany

Paleobiology (2023)

Baran Karapunar Winfried Werner Sönke Simonsen Manfred Bade Markus Lücke

Abstract Drilling predation is a common reason for mortality of benthic mollusks but did not become common until the late Mesozoic. The scarcity of drill holes in the early Mesozoic fossil record limits our understanding of the evolution of drilling behavior and its role on shaping early Mesozoic marine communities. Here, we use drilling traces on several bivalve taxa from the Lower Jurassic (Pliensbachian) marine soft-bottom deposits in northern Germany to explore behavioral patterns of the predator (e.g., site selectivity, change in site-selective behavior with age). Although none of the known drilling gastropod groups existed in the Pliensbachian, including the studied localities, the drill-hole morphology suggests that the predator was probably a gastropod. The ecology and identity of the target prey changes from a diverse array of epifaunal to infaunal taxa in older deposits to focus on a single, large, deep infaunal taxon, Gresslya intermedia , in younger deposits, suggesting a potential trend in prey selectivity over time. Spatial point pattern analysis of traces (SPPAT) reveals an aggregated pattern of drill holes on Gresslya , suggesting strong selectivity in drill-hole location. Drilling on a single large infaunal taxon and site selectivity are common patterns also inferred previously from the drilled deep infaunal Eothyasira from the Pliensbachian of southern Germany. In addition to the scarcity of predators, the highly specialized behavior of the early drilling predators, including strong prey selectivity in terms of prey identity and life habit, can partly explain the rarity of the early Mesozoic drill holes.

10.1017/pab.2023.6

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Citations (2)

A middle cenomanian coral fauna from the northern calcareous alps (Bavaria, Southern Germany) - New insights into the evolution of Mid-Cretaceous corals

Hannes Löser Winfried Werner Robert Darga

In the Northern Calcareous Alps, relics of a formerly widely distributed shallow marine facies belonging to the Branderfleck Formation (Upper Albian to Early Turonian) crop out and contain locally abundant corals. The fauna described here derives from Middle Cenomanian sediments. It encompasses 39 species in 25 genera, belonging to seven scleractinian and one octocorallian order. One genus and two species are described as new. The fauna that was formerly located at the northern part of the Apulian plate (Austroalpine unit), south of the Penninic ocean, shows palaeobiogeographic relationships to Cenomanian faunas from the Pelagonium, the Aquitanian Basin, and the Bohemian Basin, indicating stronger connections to Tethyan than Boreal faunas. The fauna also shares species with Aptian and Albian, as well as Late Cretaceous faunas. Ten genera experienced a range extension; five genera have their last occurrence in the Middle Cenomanian fauna, and five genera their first occurrence. The fauna has an intermediate position between the Early Cretaceous and the post-Cenomanian corals showing that the faunal turnover at the Cenomanian/Turonian boundary was not marked by the sudden appearance of new faunal elements, but the disappearance of taxa. Many faunal elements that constitute post-Cenomanian faunas already existed in the Cenomanian but were very rare.

Cenomanian

10.5282/ubm/epub.19014

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Citations (7)

The earliest example of sexual dimorphism in bivalves—evidence from the astartid Nicaniella (Lower Jurassic, southern Germany)

Journal of Paleontology (2021)

Baran Karapunar Winfried Werner Franz T. Fürsich Alexander Nützel

Abstract Protandrous sex change (sex change from male to female) is one of the diverse sexual expressions exhibited by bivalves, but its expression in the shell is quite rare. Previous studies on living and fossil astartids suggest a relationship between protandrous sex change and the formation of crenulations on the ventral shell margin at later ontogenetic stages. Here we report the formation of such crenulations in the Early Jurassic astartid Nicaniella rakoveci (Kuhn, 1935) from the Amaltheenton Formation at Buttenheim, Franconia. This is the earliest known record of protandrous hermaphroditism in fossil bivalves, predating previous reports by at least 13 Myr. A principal component analysis of linear size measurements and Fourier shape analysis of the shell outlines revealed that the outline of Nicaniella rakoveci specimens varies from subquadrate to subcircular, but this variation is independent of the presence or absence of crenulations and therefore not associated with sex. Crenulated specimens exhibit a lower height/inflation ratio than non-crenulated ones, suggesting that the protandrous females have more inflated valves than the males. The formation of crenulations was probably related to allocation of resources for reproduction. The most likely function of the crenulations was to increase the internal shell volume in the female stage to accommodate more eggs rather than being an adaptation against predation as often assumed for other bivalves. The formation of crenulations is part of the protandrous life history and probably is controlled by a genetic mechanism that is also responsible for sex change.

Sexual dimorphism

10.1017/jpa.2021.48

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Citations (3)

Paleoecology, dynamics and basin settings of coral, sponge and microbolite reefs from the Late Jurassic

Reinhold Leinfelder Martin Nose Dieter U. Schmid Manfred Krautter Winfried Werner

Paleoecology

Sponge

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Middle to Late Eocene paleoenvironmental changes in a marine transgressive sequence from the northern Tethyan margin (Adelholzen, Germany).

PubMed (2013)

Holger Gebhardt Stjepan Ćorić Robert Darga Antonino Briguglio Bettina Schenk

The northern Tethyan margin is a key region for determining environmental changes associated with the collision of continental and oceanic tectonic plates and Alpine orogeny. Herein we investigated Middle to Late Eocene neritic to bathyal sediments deposited during an interval of unstable climatic conditions. In order to quantify paleoenvironmental changes, we developed a detailed age model based on biozonations of planktic foraminifera, calcareous nannoplankton, and larger benthic foraminifera. The section at Adelholzen covers the almost complete Lutetian Stage (calcareous nannoplankton zones NP15a-16, planktic foraminifera zones E8-11, shallow benthic (foraminifera) zones SBZ13-15) and large parts of the Priabonian Stage (NP18-20, E14/15), while the intermediate Bartonian Stage (NP17) is completely missing. Foraminiferal, calcareous nannoplankton, and macrofossil assemblages were analyzed for changes in paleo-water depth, mixing and stratification, paleo-primary productivity (pPP), food supply, and bottom water oxygenation. Paleo-water depth estimates range from 50 m (middle neritic, early Lutetian) to nearly 500 m (upper bathyal, late Priabonian). The combination of assemblage composition, planktic and benthic foraminiferal accumulation rates, and derived parameters (carbon-flux to sea floor, pPP) enabled us to identify a series of distinct paleoceanographic events of at least regional significance. Such events are characterized by considerable changes in primary productivity or reduced bottom water ventilation. Calculated pPP-values indicate oligotrophic conditions throughout.

Bathyal zone

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Citations (18)

Taphonomy and palaeoecology of high-stress benthic associations from the Upper Jurassic of Asturias, northern Spain

Palaeogeography Palaeoclimatology Palaeoecology (2012)

Franz T. Fürsich Winfried Werner Graciela Delvene José Carlos García-Ramos David D. Bermúdez-Rochas

Micrite

Taphonomy

Marl

Paleoecology

10.1016/j.palaeo.2012.07.006