Taxonomy and palaeoecology of brachiopods from the South-Helvetic zone of the Fäneren region (Lutetian, Eocene, NE Switzerland)

Sulser, Heinz; García‐Ramos, Diego A.; Kürsteiner, Peter; Menkveld-Gfeller, Ursula

doi:10.1007/s00015-010-0018-0

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…Transects through the southern Appalachian Mountains, North America, indicate that the topography there has been uplifted and tilted by ∼ 300 m during the last ∼ 40 Ma. These results are a consequence of careful biostratigraphic mapping by Kirkland (1996), Keller et al (2002), Sulser et al (2010) and many others. Citations to primary literature for all points are included in the data tables provided as Supplementary Material.…”

Section: Global Patterns Of Upliftmentioning

confidence: 83%

Cretaceous to Recent net continental uplift from paleobiological data: Insights into sub-plate support

Fernandes

2020

GSA Bulletin

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There are many geoscience problems for which constraining histories of uplift or subsidence of Earth’s surface is of direct or indirect importance, for example reconstructing tectonics, mantle convection, geomorphology, sedimentary and chemical flux, biodiversity, glacio-eustasy, and climate change. The least equivocal constraints on timing and amplitude of vertical motions on geological timescales come from the distribution of rock formed in shallow marine environments. However, obtaining enough observations at sufficiently large spatial and temporal scales (∼100−10,000 km, ca. 1−100 Ma) to constrain histories of regional topographic evolution remains challenging. To address this issue, we adapted modern inventories of paleobiological and paleoenvironmental data to generate a new compilation of >24,000 spot measurements of uplift on all continents and numerous oceanic islands. Uncertainties associated with paleobathymetry, post-deposition compaction, and glacio-eustasy are assessed. The compilation provides self-consistent and, in places, high-resolution (<100-km-length scale, <1 Ma) measurements of Cretaceous to Recent (post-deposition) net uplift across significant tracts of most continents. To illustrate how the database can be used, records from western North America and eastern South America are combined with geophysical observations (e.g., free-air gravity, shear, and Pn-wave tomography) and simple isostatic calculations to determine the origins of topography. We explore how lithospheric thinning and mantle thermal anomalies may generate uplift of the observed wavelengths and amplitudes. The results emphasize the importance of large inventories of paleobiological data for understanding histories of tectonic and mantle convective processes and consequently landscapes, climate, and the environment.

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Section: Global Patterns Of Upliftmentioning

confidence: 83%

Cretaceous to Recent net continental uplift from paleobiological data: Insights into sub-plate support

Fernandes

2020

GSA Bulletin

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“…To ensure the reliability of the dataset, we checked the bivalve and brachiopod images and corresponding labels. Because the taxonomic system of bivalves and brachiopods is continuously improving ( Konopleva et al, 2017 ; Sulser et al, 2010 ), we categorized the genera whose taxonomic names and positions had been changed in the literature. Additionally, we removed poorly preserved fossil images, which contain two cases.…”

Section: Materials and Datamentioning

confidence: 99%

Automatic identification and morphological comparison of bivalve and brachiopod fossils based on deep learning

Sun,

Liu,

Huang

et al. 2023

PeerJ

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Fossil identification is an essential and fundamental task for conducting palaeontological research. Because the manual identification of fossils requires extensive experience and is time-consuming, automatic identification methods are proposed. However, these studies are limited to a few or dozens of species, which is hardly adequate for the needs of research. This study enabled the automatic identification of hundreds of species based on a newly established fossil dataset. An available “bivalve and brachiopod fossil image dataset” (BBFID, containing >16,000 “image-label” data pairs, taxonomic determination completed) was created. The bivalves and brachiopods contained in BBFID are closely related in morphology, ecology and evolution that have long attracted the interest of researchers. We achieved >80% identification accuracy at 22 genera and ∼64% accuracy at 343 species using EfficientNetV2s architecture. The intermediate output of the model was extracted and downscaled to obtain the morphological feature space of fossils using t-distributed stochastic neighbor embedding (t-SNE). We found a distinctive boundary between the morphological feature points of bivalves and brachiopods in fossil morphological feature distribution maps. This study provides a possible method for studying the morphological evolution of fossil clades using computer vision in the future.

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“…Baeza-Carratalá et al (2014) confirmed that this lithological unit was deposited in a soft-ground environment, with the presence of rounded rhynchonellids and terebratulids thickened in the posterior third of the shell, with very incurved beaks and obliterated or minute pedicle foramina (i.e., absence of a functional pedicle capable of resisting currents; sensu Copper, 1997), which suggested a primarily free-lying life mode for the brachiopod assemblage. The morphological features characterizing these forms were interpreted to provide improved stability in unconsolidated sediments since they allow the shell to turn with prevailing currents (Surlyk, 1972; Álvarez and Emig, 2005; Richardson et al, 2007; Sulser et al, 2010; Baeza-Carratalá et al, 2014).…”

Section: Interpretations On the Habitat And Adaptive Strategies Of CImentioning

confidence: 99%

Cisnerospira(Brachiopoda, Spiriferinida), an atypical Early Jurassic spire bearer from the Subbetic Zone (SE Spain) and its significance

Baeza-Carratalá¹,

Manceñido²,

Joral

2016

J. Paleontol.

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The order Spiriferinida represented a significant group whose extinction is linked to the early Toarcian mass extinction event. The genusCisnerospiraManceñido, 2004, conspicuous representative of this group in the Early Jurassic of the western Tethys, is analyzed from a systematic standpoint, grounded mainly on evidence from the Subbetic domain, and its initial diagnosis is revised accordingly. A definitive suprageneric position within the subfamily Paralaballinae is formally proposed in the light of new data herein provided. Both external and internal diagnostic features and the generic and intraspecific variability are described through the analysis of theCisnerospiraspecies recorded in the easternmost Subbetic area, i.e.,Cisnerospira adscendens(Deslongchamps, 1858), C. aff.adscendens, C. angulata(Oppel, 1861), andC.?sylvia(Gemmellaro,1882). In addition, their interrelation with other records from several Tethyan basins is addressed, and the generic spectrum has been extended to include several species with high morphological affinity. This characterization thus contributes to clarify certain ambiguities in the systematics of the spiriferinids, which entails a complex taxonomy mainly based on the external features, where the ribbing pattern was given foremost classificatory value due to the lack of more reliable generic diagnostic criteria. Furthemore, a morphofunctional analysis performed inCisnerospirareveals a presumable epibenthonic libero-sessile way of life, and two alternative adaptive strategies are discussed: resting on and/or sticking in substrates with different degree of consolidation, providing a significant hydrodynamic stability to the shell.

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Taxonomy and palaeoecology of brachiopods from the South-Helvetic zone of the Fäneren region (Lutetian, Eocene, NE Switzerland)

Cited by 7 publications

References 22 publications

Cretaceous to Recent net continental uplift from paleobiological data: Insights into sub-plate support

Cretaceous to Recent net continental uplift from paleobiological data: Insights into sub-plate support

Automatic identification and morphological comparison of bivalve and brachiopod fossils based on deep learning

Cisnerospira(Brachiopoda, Spiriferinida), an atypical Early Jurassic spire bearer from the Subbetic Zone (SE Spain) and its significance

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