Results 191 to 200 of about 4,368 (245)

Famennian chondrichthyan microremains from Morocco and Sardinia

Journal of Paleontology, 2008
New material from the Famennian of Morocco in the southern Maider comprises chondrichthyan teeth(Thrinacodus, Cobelodus, Denaea, Stethacanthus), actinopterygian remains (scales, teeth and hemilepidotrichium) and one acanthodian scale. The absence of crushing teeth suggests deeper water environments for the Maider Basin than the Tafilalt Basin ...
Derycke Khatir C., SPALLETTA, CLAUDIA, PERRI, MARIA CRISTINA, Corradini C.   +3 more
openaire   +2 more sources

An abrupt oceanic change and frequent climate fluctuations across the Frasnian–Famennian transition of Late Devonian: Constraints from conodont Sr isotope

Geological Journal, 2019
The Late Devonian Frasnian–Famennian (F‐F) transition witnessed one of the “big five” mass extinction events in the Phanerozoic. We here present high‐resolution conodont Sr isotopic data from Fuhe (South China) and Kowala (South Central Poland) sections ...
Liyu Zhang, Daizhao Chen, Taiyu Huang, Hao‐Cheng Yu, Xiqiang Zhou, Jianguo Wang   +5 more
semanticscholar   +1 more source

Late Devonian benthic ostracods from South China and their response to the Frasnian–Famennian event

, 2020
Late Devonian ostracods are described for the first time from the Frasnian–Famennian (F–F) transition of the Zengpiyan section, Guangxi, South China.
Junjun Song, S. Crasquin, Ruoying Fan, Wen-Yi Guo, Yujue Wang, Jia-Yuan Huang, Wenkun Qie   +6 more
semanticscholar   +1 more source

Zinc and strontium isotope evidence for climate cooling and constraints on the Frasnian-Famennian (~372 Ma) mass extinction

Palaeogeography, Palaeoclimatology, Palaeoecology, 2018
The Frasnian-Famennian (F-F) mass extinction is one of the “Big Five” biotic crises during the Phanerozoic, whereas the cause of this catastrophic event still remains debated.
Xunlian Wang, Sheng‐Ao Liu, Zhengrong Wang, Daizhao Chen, Liyu Zhang   +4 more
semanticscholar   +1 more source

FAMENNIAN TENTACULITIDS OF CHINA

Journal of Paleontology, 2000
Until recently, paleontologists believed tentaculitids became extinct by the end of the Frasnian. Lyaschenko (1958) described the youngest occurrence of the genera Styliolina and Homoctenus from the Frasnian of Russia. However, in Europe and North Africa, Lardeux (1969) proposed that Homoctenus ultimus pergracilis persisted into the Famennian ...
openaire   +1 more source

Latest Devonian (Famennian, expansa Zone) conodonts and sponge-microbe symbionts in Pinyon Peak Limestone, Star Range, southwestern Utah, lead to reevaluation of global Dasberg Event

Palaeogeography, Palaeoclimatology, Palaeoecology, 2019
We document the signature of the late Famennian (Early expansa Zone) multi-phase Dasberg Event, previously termed ALFIE, in Utah and Colorado. The Dasberg was a major event, not a crisis, because it resulted from a eustatic rise that introduced the ...
C. W. Stock, C. Sandberg
semanticscholar   +1 more source

The global Frasnian-Famennian »Kellwasser Event«

Geologische Rundschau, 1991
During the UppermostP. gigas conodont zone (P. linguiformis zone) the stepwise Frasnian extinction culminates in the global transgressive-regressive Frasnian-Famennian »Kellwasser event«. Most pelagic organisms of the tropical marine environment are more or less affected by this mass extinction.
openaire   +1 more source

Famennian Reefs in Alberta, Canada: ABSTRACT

AAPG Bulletin, 1964
The lowermost 200 feet of the Wabamun group of Famennian age may sporadically display an unusually abundant fauna in the subsurface of Alberta northeast of the then slowly submerging Poaco River landmass. This fauna, composed of stromatoporoids, coralline algae and various rod- and tube-shape bioclastic fragments in a sparry cement, is completely ...
openaire   +1 more source

Newly recognized Famennian lungfishes from East Greenland reveal tooth plate diversity and blur the Devonian–Carboniferous boundary

Papers in Palaeontology, 2018
Three lungfish specimens from the late Famennian of East Greenland are described. One forms the holotype of a new genus and species, Celsiodon ahlbergi gen. et sp.
J. Clack, T. Challands, T. Smithson, K. Smithson   +3 more
semanticscholar   +1 more source

Frasnian-Famennian extinctions

1982
Extinctions are continuous throughout the Phanerozoic. Although a single natural phenomenon brought about by environmental change at any scale, they may be conveniently divided into two classes: background extinction and mass extinction (Raup and Sepkoski, 1982).
openaire   +1 more source