Auflistung Paläontologie, Geobiologie nach Titel
Anzeige der Dokumente 315-334 von 380
-
Tackling the jelly web: Trophic ecology of gelatinous zooplankton in oceanic food webs of the eastern tropical Atlantic assessed by stable isotope analysis
(Limnology and Oceanography, 2020)Gelatinous zooplankton can be present in high biomass and taxonomic diversity in planktonic oceanic food webs, yet the trophic structuring and importance of this “jelly web” remain incompletely understood. To address this ... -
Taxonomical diversity and palaeobiogeographical affinity of belemnites from the Pliensbachian–Toarcian GSSP (Lusitanian Basin, Portugal)
(Papers in Palaeontology, 2020-11-30)Abstract High‐resolution analysis of the late Pliensbachian – early Toarcian belemnite assemblages from the Peniche section (Lusitanian Basin) has enabled, for the first time, recognition of eight taxa of the suborder ... -
Taxonomy and diversity of slit‐band gastropods (Order Pleurotomariida) and some slit bearing Caenogastropoda from the Pennsylvanian of the USA
(Papers in Palaeontology, 2022-04-11)Pleurotomariida have the longest fossil record among living gastropods and are diverse and abundant in the middle and upper Palaeozoic. Its traditional classification is based on adult shell characters. The early shell ... -
Teeth of Past and Present Elephants: Microstructure and Composition of Enamel in Fossilized Proboscidean Molars and Implications for Diagenesis
(Geochemistry, Geophysics, Geosystems, 2021-04-22)Enamel as hardest biological tissue remains unaltered for millions of years and is therefore an excellent archive for studies on paleodiet, paleoecology, paleoclimate, paleoenvironment, biomechanical, and evolutionary ... -
Temporal declines in Wadden Sea phytoplankton cell volumes observed within and across species
(Limnology and Oceanography, 2021-12-27)Cell size is a master trait in the functional ecology of phytoplankton correlating with numerous morphological, physiological, and life‐cycle characteristics of species that constrain their nutrient use, growth, and ... -
‘Ten Years After’—a long‐term settlement and bioerosion experiment in an Arctic rhodolith bed (Mosselbukta, Svalbard)
(Geobiology, 2021-09-15)Rhodolith beds and bioherms formed by ecosystem engineering crustose coralline algae support the northernmost centres of carbonate production, referred to as polar cold‐water carbonate factories. Yet, little is known about ... -
Testing the success of palaeontological methods in the delimitation of clam shrimp (Crustacea, Branchiopoda) on extant species
(Palaeontology, 2023-01-16)Fossil spinicaudatan taxonomy heavily relies on carapace features (size, shape, ornamentation) and palaeontologists have greatly refined methods to study and describe carapace variability. Whether carapace features alone ... -
Testing the use of the silica deposition fluorescent probe PDMPO to estimate in situ growth rates of diatoms
(Limnology and Oceanography: Methods, 2022-08-12)The fluorophore [2‐(4‐pyridyl)‐5{[4‐dimethylaminoethyl‐aminocarbamoyl‐methoxy]phenyl}oxazole], in short PDMPO, is incorporated in newly polymerized silica in diatom frustules and thereby provides a tool to estimate Si ... -
Testing the usefulness of optical data for zooplankton long‐term monitoring: Taxonomic composition, abundance, biomass, and size spectra from ZooScan image analysis
(Limnology and Oceanography: Methods, 2022-05-28)The pelagic ecosystem of the Arctic Ocean is threatened by severe changes such as the reduction in sea‐ice coverage and increased inflow of warmer Atlantic water. The latter is already altering the zooplankton community, ... -
Teuthiden aus dem Barrême der Insel Maio (Kapverdische Inseln)
(Paläontologische Zeitschrift, 1982) -
Teuthiden aus dem Barrême der Insel Maio (Kapverdische Inseln)
(Paläontologische Zeitschrift, 1982)The teuthids of the collection R. STAHLECKER, 1929, from the Isle of Maio (Cape Verde Islands) are described. Neololigosepia stahleckeri n. gen. n. sp. and Maioteuthis morroensis n. gen. n. sp. are one of the first ... -
Teuthiden aus dem Unterapt ("Töck") von Helgoland (Schleswig-Holstein, Norddeutschland)
(Paläontologische Zeitschrift, 1985): From the Early Aptian ("Töck") of Heligoland (North Germany) three new species, one new genus and one new family of Teuthids are described: M astigophora stuehmeri n. sp., Boreopeltis helgolandiae n. gen. n. sp. and ... -
Teuthiden aus dem Unterapt ('Töck') von Helgoland (Schleswig-Holstein, Norddeutschland)
(Paläontologische Zeitschrift, 1985) -
The bipolar bivalve Oxytoma (Palmoxytoma) cygnipes (Young & Bird, 1822) in the Upper Pliensbachian of Germany
(Paläontologische Zeitschrift, 2011)The morphologically conspicuous bivalve Oxytoma (Palmoxytoma) cygnipes (Young & Bird, 1822), known for its palaeogeographically bipolar distribution, from a limestone bed in the boundary “Belemniten–Schichten”/Amaltheenton ... -
The detection of bacterial exometabolites in marine dissolved organic matter through ultrahigh‐resolution mass spectrometry
(Limnology and Oceanography: Methods, 2022-05-05)Bacteria play a key role in sustaining the chemodiversity of marine dissolved organic matter (DOM), yet there is limited direct evidence of a major contribution of bacterial exometabolites to the DOM pool. This study tests ... -
The early Cenomanian crippsi Event at Lüneburg (Germany): palaeontological and stratigraphical significance of a widespread Late Cretaceous bioevent
(Palaeobiodiversity and Palaeoenvironments, 2021-01-07)The early Cenomanian crippsi Event comprises a 1–3-m-thick interval characterised by mass occurrences of the early Cenomanian inoceramid Gnesioceramus crippsi, identified in the uppermost Sharpeiceras schlueteri Subzone ... -
The evolution of thecideide microstructures and textures: traced from Triassic to Holocene
(Lethaia, 2021-04-02)Thecideide brachiopods are an anomalous group of invertebrates. In this study, we discuss the evolution of thecideide brachiopods from the Triassic to the Holocene and base our results and conclusions on microstructure and ... -
The first belemnite of boreal ancestry from the Early Cretaceous (Valanginian) of the western Tethys: implications for belemnite ecology
(Papers in Palaeontology, 2022-07-17)The first occurrence of the belemnite species Liobelus acrei (formerly Acroteuthis acrei) is reported from the Lower Cretaceous (Valanginian) of the Vocontian Basin (VB; south‐east France). This first record of the genus ... -
The first report of an ‘evergreen Castanopsis type’ wood (Fagaceae) for the Late Miocene–Early Pliocene of Europe (Bulgaria, Blagoevgrad Graben)
(Geological Journal, 2020)In the present article, the establishment of the species Castanopsis: C. bulgarica Mantzouka, Ivanov, and Bozukov is proposed after the study of a new fagaceous fossil wood stem discovered in 2016 from a new Late Miocene ...