The palaeobiogeographical spread of the acritarch Veryhachium in the Early and Middle Ordovician and its impact on biostratigraphical applications [PDF]
, 2014 The genus Veryhachium Deunff, 1954, is one of the most frequently documented acritarch genera, being recorded from the Early Ordovician to the Neogene.
Li, Jun +5 more
core +2 more sources
A summary of the Brazilian Paraná Basin Ordovician [PDF]
Estonian Journal of Earth Sciences, 2023 The study of the Ordovician of Paraná Basin culminated on the three-fold lithostratigraphic subdivision of the Rio Ivaà Group as follows: Alto Garças, Iapó and Vila Maria formations.
Carolina Zabini +11 more
doaj +1 more source
The Llandovery–Wenlock boundary interval in west-central continental Estonia: an example from the Suigu (S-3) core section [PDF]
Estonian Journal of Earth Sciences, 2014 A gap corresponding to several conodont and chitinozoan zones occurs in the Llandovery–Wenlock boundary interval in some sections in the western coastal region of Estonia and on islands in the Muhu Strait.
Peep Männik +5 more
doaj +1 more source
A bio- and chemostratigraphic search for the Mid-Ludfordian Carbon Isotope Excursion interval in the Ludlow of the Ohesaare core, Estonia [PDF]
Estonian Journal of Earth Sciences, 2022 For years, the Ohesaare core section and its rich fossil assemblages have enticed researchers to suggest various ideas about Silurian stratigraphy in the East Baltic despite several sedimentary gaps occurring through the Ludlow interval in particular ...
Dimitri Kaljo +4 more
doaj +1 more source
A multiproxy study of the Puhmu core section (Estonia, Upper Ordovician): consequences for stratigraphy and environmental interpretation [PDF]
Estonian Journal of Earth Sciences, 2017 A multiproxy study of the Katian and Hirnantian in the Puhmu core in NE Estonia resulted in new data on chitinozoan and brachiopod biostratigraphy. Some mass occurrences of dasycladacean algae are tied to small early Katian ‘reefs’.
Dimitri Kaljo +3 more
doaj +1 more source
Journal of Spectroscopy, Volume 24, Issue 3-4, Page 207-212, 2010., 2010 Laser Raman microspectroscopy was used as a microchemical analysis technique to characterize the wall chemistry of organic‐walled microfossils (acritarchs and prasinophytes) extracted from Proterozoic (Tonian: ca. 900 Myr) and early Palaeozoic (Silurian: ca.
Marie-Claire Dhamelincourt +5 more
wiley +1 more source
The lower boundary of the Haljala Regional Stage (Sandbian, Upper Ordovician) in Estonia [PDF]
Estonian Journal of Earth Sciences, 2020 Multi-proxy correlation is used to address the boundary of the Kukruse and Haljala regional stages across the Estonian part of the Baltoscandian Ordovician Palaeobasin.
Tõnn Paiste +3 more
doaj +1 more source
Devonian palynological assemblages from the San Antonio x-1 Borehole, Tarija Basin, northwestern Argentina [PDF]
, 2011 The palynological analysis of the 2548-3628 m interval of the San Antonio x-1 Borehole in northwestern Argentina is presented. The illustrated palynoflora is composed of 96 species represented by diverse palynological groups such as trilete spores and ...
Di Pasquo, M. M., Noetinger, S.
core +4 more sources
The paleobiogeographical significance of the Silurian and Devonian trilobites of Japan [PDF]
, 2019 Six major groups of trilobites from the Silurian and Devonian of Japan are evaluated for their paleobiogeographical signature. Silurian illaenids and scutelluids show four generic-level and at least two species-level links with the Australian segment of ...
Komatsu, Toshifumi +9 more
core +1 more source
Palynostratigraphy and palaeoecology of the Niur Formation, Tikdar section, northwest of Kerman, Central Iran [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2019 Diverse, moderately to well-preserved palynomorphs including acritarchs (sensu stricto), prasinophytes cyst, chitinozoans, scolecodonts, and spores occur in some surface samples (90 meters thereof) of the Niur Formation (200 m thick) at the Tikdar ...
Hossein Hashemi +2 more
doaj +1 more source