Results 11 to 20 of about 671 (189)
AI‐assisted identification of stromatoporoids
The Depositional RecordStromatoporoid sponge fossils were major diverse reef‐builders in the Palaeozoic Era; their taxonomic identification relies on thin sections examined under transmitted light microscopy, where vertical and transverse skeletal elements reveal diagnostic ...
David Rodríguez González +3 more
doaj +4 more sources
Journal of Palaeogeography, 2013 Palaeozoic stromatoporoids are calcified sponges common between Middle Ordovician and Late Devonian times in reefs and related facies. Taxonomic work is well known, but controversial because of conflict between classification schemes based on the ...
Steve Kershaw
doaj +3 more sources
New Data on Conodonts of the Upper Devonian of the Polar Urals (Ostantsovy Section, Malaya Usa River) [PDF]
Учёные записки Казанского университета: Серия Естественные науки, 2016 The main features of the Upper Devonian sediments on the right side of the Ostantsovy Creek (the left tributary of the Malaya Usa River) in the eastern part of the Bielsko-Eletskaya structural formational belt on the western slope of the Polar Urals have
M.A. Soboleva, D.B. Sobolev
doaj +1 more source
Palaeozoic stromatoporoid diagenesis: a synthesis [PDF]
Facies, 2021 AbstractPalaeozoic stromatoporoids, throughout their 100-million + year history (Middle Ordovician to Late Devonian and rare Carboniferous), are better preserved than originally aragonite molluscs, but less well-preserved than low magnesium-calcite brachiopods, bryozoans, trilobites and corals.
Kershaw, S +3 more
openaire +2 more sources
, 2022 A, B–amphiporoid peloidal limestones (wackestones-packstones) with numerous Amphipora and Stachyodes (sample 1 on Fig 5); C, D–micritic/microspar peloidal limestones (mudstones) (sample 3 on Fig 5); E, F–stromatoporoid detrital limestones (rudstones ...
Piotr Łuczyński (12557756)
core +2 more sources
Stromatoporoid-coral/tubeworm intergrowths in the lowermost Silurian Varbola Formation of Estonia: first evidence of competitive interaction [PDF]
, 2022 Tabulate corals, particularly auloporids and syringoporids, are commonly found as intergrowths in host stromatoporoids in Palaeozoic shallow marine limestones.
Kershaw, S +5 more
core +1 more source
Palaeoecology of corals and stromatoporoids in a late Silurian biostrome in Estonia [PDF]
Acta Palaeontologica Polonica, 2016 A middle Ludlow biostrome at Katri, western Estonia, the richest accumulation of corals and stromatoporoids in Estonia, is partly exposed in a coastal section.
Steve Kershaw, Mari-Ann Mõtus
doaj +1 more source
New Hirnantian orthide brachiopods from the type section of the Porkuni Stage (Porkuni quarry, northeastern Estonia) [PDF]
Estonian Journal of Earth Sciences, 2012 Four new Hirnantian species of orthide brachiopods, Sigmelasma peepi, Mendacella aerinensis, Drabovia? minuta and Tyronella siugensis are described from the type section of the Porkuni Regional Stage in the Porkuni quarry, northeastern Estonia.
Linda Hints
doaj +1 more source
New evidence of an early Pridoli barrier reef in the southern part of the Baltic Silurian basin based on three-dimensional seismic survey, Lithuania [PDF]
Estonian Journal of Earth Sciences, 2015 Reefs and a barrier reef have been newly identified and mapped by three-dimensional (3D) seismic survey in Lithuania. Seismic data analysis has allowed the size and geometry of these reefs to be determined.
Donatas Kaminskas +2 more
doaj +1 more source
Sedimentology, Volume 70, Issue 5, Page 1413-1471, August 2023., 2023 ABSTRACT The study examines bioclastic carbonate contourites that arise from the broad spectrum of bottom‐current related sedimentary processes ranging from deposition to erosion. The result of the intermittent accumulation of sediment are thin and condensed successions with abundant hiatuses.
Heiko Hüneke +9 more
wiley +1 more source