Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Ptychagnostus"'
Autor:
Frederick A. Sundberg
Publikováno v:
Journal of Paleontology. 94:1-49
The Lakeview Limestone is one of the westernmost Cambrian exposures in the northwestern United States and occurs on the western edge of the Montania paleotopographic high. These deposits occur between the deeper water deposits to the west and carbona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac2745f4e968ada49c922ba413025059
https://doi.org/10.1017/jpa.2020.38
https://doi.org/10.1017/jpa.2020.38
Publikováno v:
Spanish Journal of Palaeontology, Vol 32, Iss 1, Pp 17-26 (2020)
A new study of the trilobite record in the Mansilla Formation (Iberian Chains, NE Spain) has led to the discovery of the presence of Bailiaspis aff. tuberculata, B. cf. tuberculata and Bailiaspis sp., the first certain citation of this genus in the M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a8ae7ddf7d71c8f80c2daef9a04a4a2
https://ojs.uv.es/index.php/sjpalaeontology/article/view/17027
https://ojs.uv.es/index.php/sjpalaeontology/article/view/17027
Publikováno v:
GFF; 138(4), pp 490-501 (2016)
The Tomten-1 drilling at Torbjorntorp in Vastergotland, southern Sweden, penetrated 29.85 m of Cambrian Series 2, Cambrian Series 3, Furongian, and Lower–Middle Ordovician strata. Lithostratigraphically, the succession includes the File Haidar, Bor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d31f17db4552d0e33497c231766bace0
https://doi.org/10.1080/11035897.2016.1190545
https://doi.org/10.1080/11035897.2016.1190545
Autor:
Cuen Romero, Francisco Javier, Beresi, Matilde Sylvia, Palafox Reyes, Juan José, Montijo González, Alejandra
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
En la región de Arivechi, estado de Sonora, aflora una secuencia sedimentaria del Paleozoico inferior (Cámbrico), representadapor las formaciones La Sata, El Mogallón, La Huerta y Milpillas, con una litología predominante de caliza, caliza arcill
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::7a059fddb5bce8f13626936e79291332
http://www.ojs-igl.unam.mx/index.php/Paleontologia/article/view/616
http://www.ojs-igl.unam.mx/index.php/Paleontologia/article/view/616
Autor:
Duck K. Choi, Paul S. Hong
Publikováno v:
Journal of Paleontology. 89:377-384
This paper reports the successive occurrence ofPtychagnostus sinicusLu, 1957 andPtychagnostus atavus(Tullberg, 1880) from the lower part of the Machari Formation, Yeongwol Group, Korea. Morphometric approaches of using the landmark and principal comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28249824cef2ce26b332de69ce441879
https://doi.org/10.1017/jpa.2015.30
https://doi.org/10.1017/jpa.2015.30
Publikováno v:
Palaeogeography, Palaeoclimatology, Palaeoecology. 571:110385
The middle Cambrian is an important period for the decline of metazoans and the resurgence of microbialites. Based on the analysis of carbon and oxygen isotopes, detrital zircon U Pb dating, and geochemical analysis, the middle Cambrian DICE (Drumian
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50b21c8d740d647fcbef95dbd227ba77
https://doi.org/10.1016/j.palaeo.2021.110385
https://doi.org/10.1016/j.palaeo.2021.110385
Autor:
Susanne Schmid, Anais Pagès
Publikováno v:
Palaeogeography, Palaeoclimatology, Palaeoecology. 461:65-76
The Cambrian Drumian carbon isotope excursion (DICE) event is a negative carbon isotope (δ 13 C) excursion. It is associated with the first appearance datum (FAD) of the agnostoid arthropod Ptychagnostus atavus , whose first appearance in the Global
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17450b44f13233ff20d98b4586579682
https://doi.org/10.1016/j.palaeo.2016.08.008
https://doi.org/10.1016/j.palaeo.2016.08.008
Publikováno v:
Papers in Palaeontology. 3:21-48
A previously undocumented diversity of Cambrian palaeoscolecids is described from localities in Sweden, Norway and Denmark. The material described here includes isolated sclerites as well as the first macroscopic specimens reported from the palaeocon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1b34cec660e36701213da066946815d
https://doi.org/10.1002/spp2.1067
https://doi.org/10.1002/spp2.1067
Autor:
Juan José Palafox-Reyes, Héctor Arturo Noriega-Ruiz, Alejandro Varela-Romero, Francisco Javier Grijalva-Noriega, Luis Fernando Enríquez-Ocaña, Frederick A. Sundberg, Francisco Javier Cuen-Romero, Rogelio Monreal
Publikováno v:
Journal of South American Earth Sciences. 103:102797
The lower and middle Cambrian strata exposed in the state of Sonora, Mexico, consists of sequences of quartzarenite, limestone, shale and dolomite exposed in several localities, mainly in the northwestern and central regions of Sonora. Approximately
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::329a4fb1dfa8aee41cd6b5b309a641ff
https://doi.org/10.1016/j.jsames.2020.102797
https://doi.org/10.1016/j.jsames.2020.102797
Publikováno v:
GFF. 137:175-180
Three cranidia of a conocoryphid trilobite are described from the lower Caesaraugustan Regional Stage (upper part of provisional Cambrian Stage 5 within Cambrian Series 3) in the Iberian Chains, Spain. The material is from the upper part of the Mansi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33a7f8a3b33b79263cd4975952790557
https://doi.org/10.1080/11035897.2015.1061593
https://doi.org/10.1080/11035897.2015.1061593