Results 31 to 40 of about 443 (143)

The appearance of Rosenella (stromatoporoid sponge) in Baltica: new species from the Pirgu Stage (Katian, Upper Ordovician) of Estonia [PDF]

open access: yesEstonian Journal of Earth Sciences
The Katian Age, part of the Late Ordovician Epoch, was a period of significant stromatoporoid diversification. However, their fossil record is often less continuous, hindering our understanding of their diversity and diversification.
Juwan Jeon, Ursula Toom
doaj   +1 more source

Palaeoecological features of Lower Asselian (Lower Permian) carbonate skeletal mounds in the Pisanyi Kamen’ section (Un’ya River, Northern Urals)

open access: yesThe Depositional Record, Volume 7, Issue 2, Page 311-332, June 2021., 2021
The Pisanyi Kamen’ section on the Un'ya River, Northern Urals, from the Lower Asselian stratigraphic interval is the central part of a succession of skeletal mounds that are composed of biocementstones. Palaeoecological analysis allows the pioneer stages of the ecological succession, representing the stabilisation and colonisation stages, to be ...
Evgeniy S. Ponomarenko
wiley   +1 more source

Revisiting the Cupidito unit (Cupido Formation) along peritidal carbonates from northeastern Mexico

open access: yesRevista Mexicana de Ciencias Geológicas, 2020
Depositional episodes are readily identified along representative localities of the Lower Cretaceous Cupido platform in northeastern Mexico. The basal part of the Cupido Formation exhibits a progradational reef platform that, at the upper limit, is ...
Felipe de Jesús Torres de la Cruz   +3 more
doaj   +1 more source

Palaeobiology, ecology, and distribution of stromatoporoid faunas in biostromes of the mid-Ludlow of Gotland [PDF]

open access: yes, 2008
Six well exposed mid−Ludlow stromatoporoid−dominated reef biostromes in four localities from the Hemse Group in southeastern Gotland, Sweden comprise a stromatoporoid assemblage dominated by four species; Clathrodictyon mohicanum, “Stromatopora” bekkeri,
Kershaw, S, Sandström, S
core   +1 more source

Interrelations between stromatoporoid morphometric features - a quantitative approach based on specimens from the Silurian of Podolia (Ukraine) and the Devonian of the Holy Cross Mountains (Poland) [PDF]

open access: yes, 2020
Morphometric attributes of 705 stromatoporoid specimens from a number of exposures from the Silurian of Podolia (Ukraine) and the Devonian of the Holy Cross Mountains (Poland), representing a wide array of shallow water carbonate sedimentary environments,
Łuczyński, Piotr
core   +1 more source

The Truong Son, Loei-Phetchabun, and Kontum Terranes in Indochina: Provenance, Rifting, and Collisions

open access: yesFrontiers in Earth Science, 2021
The three main regions of Indochina are defined as the Truong Son, Loei-Phetchabun, and Kontum terranes. The aim of this review is to integrate numerous petrological studies with sedimentary, palaeontological, and provenance studies in order to construct
Clive Burrett   +3 more
doaj   +1 more source

First report of an aulaceratid stromatoporoid from the Ordovician of Baltica [PDF]

open access: yesEstonian Journal of Earth Sciences
The aulaceratid stromatoporoids first appeared in the late Middle Ordovician and had achieved a worldwide distribution in tropical to subtropical shallow-marine environments by the Late Ordovician; however, their presence in Baltica has not been ...
Juwan Jeon, Ursula Toom
doaj   +1 more source

Rugose corals across the Devonian-Carboniferous boundary in NW Turkey [PDF]

open access: yesActa Palaeontologica Polonica, 2016
An uppermost Famennian (Strunian) coral assemblage has been recovered in the middle part of the Yılanlı Formation of the Istanbul Zone (Zonguldak and Bartın areas, NW Turkey). In the Bartın area, the studied fossiliferous interval corresponds to a c.
Julien Denayer
doaj   +1 more source

ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOIC

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2020
This work analyses the development of reefs, which represent thick morphologically expressed carbonate massifs created by the activity of frame-forming organisms. Major stages in the development of reefs include the periods of Early Cambrian, Ordovician,
V. G. Kuznetsov
doaj   +1 more source

Palaeozoic correlations and the Palaeogeography of the Sibumasu (Shan-Thai) Terrane - a brief review [PDF]

open access: yesResearch & Knowledge, 2016
Furongian sandstones yield shallow-water trilobite faunas along the length of the Sibumasu Terrane in the four regions of NW Malaysia (Langkawi), southern Thailand (Satun), the Shan States of Myanmar and the Baoshan Block of western Yunnan.
Clive Burrett   +2 more
doaj   +1 more source

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