Zobrazeno 1 - 10
of 768
pro vyhledávání: '"Tremadocian"'
Autor:
MARCELA CICHOWOLSKI, N. EMILIO VACCARI, ALEXANDER POHLE, DANIEL A. MORÓN ALFONSO, ROMAIN VAUCHER, BEATRIZ G. WAISFELD
Publikováno v:
Acta Palaeontologica Polonica, Vol 68, Iss 4, Pp 583-601 (2023)
We describe early Tremadocian (Kainella meridionalis Biozone) cephalopods from the Cordillera Oriental, Jujuy, NW Argentina. They consist of numerous small specimens collected at the Quebrada de Arenal, Trancas section, near the town of Tilcara, in
Externí odkaz:
https://doaj.org/article/bfffe6382b3b4fd58fd51fce69e0bb27
Autor:
Dulce Raquel Reyes-Montoya, Francisco Javier Cuen-Romero, Pilar Navas-Parejo, Nohemí Gámez-Meza, Juan José Palafox-Reyes, Juan Carlos Gutiérrez-Marco
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 90-93 (2023)
Graptolites from the early Tremadocian Anisograptus matanensis Biozone are identified from east-central Sonora, northwestern Mexico, within a carbonate-shelf succession deposited on the southwestern continental shelf margin of Laurentia. This is the
Externí odkaz:
https://doaj.org/article/139515278f6243eaa479c17fefb6b2da
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 78-81 (2023)
Tremadocian highly metalliferous black shales and associated grey shales from the Aseri PH012B drill core (NE Estonia) in the innermost part of the Baltic Palaeobasin were targeted to record their nitrogen and organic carbon isotope variance combined
Externí odkaz:
https://doaj.org/article/40345950ef7e4dc2b6468c7826fbc51f
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 54-57 (2023)
The Erdaopuzi section in the Baishan area of Jilin Province, northeast China, contains abundant late Tremadoc graptolites. However, there are some taxonomic controversies regarding the characters of the hand specimens that are difficult to identify.
Externí odkaz:
https://doaj.org/article/8b5947d0e2614efcaaeb855e80c3b178
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 26-29 (2023)
Solutans are relatively common members of echinoderm assemblages in the Saint-Chinian Formation (upper Tremadocian) of the Montagne Noire (France). The revision of all available material confirms that most specimens can be assigned to Minervaecystis
Externí odkaz:
https://doaj.org/article/55c3770ceab34d2b8239fd7b011c60cf
Akademický článek
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Akademický článek
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Publikováno v:
Journal of Palaeogeography, Vol 10, Iss 1, Pp 1-15 (2021)
Abstract This study provides an overview and discussion of controls on the distribution of organic reefs during the Early Ordovican Period, in the Yangtze Platform, a region of epicontinental sedimentary rocks in South China. The Yangtze Platform was
Externí odkaz:
https://doaj.org/article/a992eb4664874694aa612241911a6434
Autor:
Jerzy Dzik
Publikováno v:
Acta Palaeontologica Polonica, Vol 65, Iss 1, Pp 149-165 (2020)
A block of stromatolitic limestone found on the Angara River shore near Kodinsk, Siberia, derived from the exposed nearby Ust-kut Formation, has yielded a sample of 146 ellesmeroceratid nautiloid specimens. A minor contribution to the fossil assembla
Externí odkaz:
https://doaj.org/article/c337e06658c942a38e4e329c8f85ba79
Publikováno v:
Journal of Stratigraphy and Sedimentology Researches, Vol 36, Iss 1, Pp 61-88 (2020)
Abstract In this research, Ordovician conodonts obtained from the sedimentary succession of the informal Katkoyeh formation is studied in a stratigraphic section at the south of Kuh-e-Bonorg, eastern flank of Kalmard Anticline in the west of Tabas (C
Externí odkaz:
https://doaj.org/article/f20d71d8496a454bac7ab30e5a5d4dbe