About the stratigraphic position of the Lower Aptian Roloboceras hambrovi (Ammonoidea) level
In the stratotype of the Lower Aptian substage the position of the assemblage that includes Roloboceras spp. and Megatyloceras spp. has been clearly established as being in the middle part of the upper Bedoulian. Some authors have erected this horizon as
Conte Gabriel+3 more
doaj
Certain Jurassic (‘Inferior Oolite’) Species of Ammonites and Brachiopoda [PDF]
S. S. Buckman
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The study of more than 40 sections in the "Creniceras renggeri marls" of the French Jura Range (Lower Oxfordian) has found: * a precise biochronostratigraphic subdivison of 16 successive populations or associations which appears to be stable over the ...
Jardat Rémi
doaj
Callovian (Jurassic) ammonites from the United States and Alaska; Part 2. Alaska Peninsula and Cook Inlet regions [PDF]
Ralph Willard Imlay
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Controls for Phylogeny and Robust Analysis in Pareto Task Inference. [PDF]
Adler M+9 more
europepmc +1 more source
Some Upper Cretaceous Desmoceratids from Hokkaido and Saghalien : Studies on the Cretaceous Ammonites from Hokkaido and Saghalien-Ⅶ [PDF]
Tatsuro Matsumoto, Ikuwo Obata
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The Jurassic of Denmark and Greenland: Lower Jurassic (Pliensbachian) ammonites from Bornholm, Baltic Sea, Denmark [PDF]
The Jurassic succession of the island of Bornholm in the Baltic Sea includes the Hettangian – lowermost Pliensbachian Rønne Formation, the Lower Pliensbachian Hasle Formation, the Upper Pliensbachian – (?)Lower Aalenian Sorthat Formation and the (?)Upper
Surlyk, Finn, Donovan, Desmond T.
doaj
Jurassic Palynology from "The Dinosaur Coast" of Asturias (Lastres Fm., Northwestern Spain): Palynostratigraphical and Palaeoecological Insights. [PDF]
Santos AA+4 more
europepmc +1 more source
Monograph on the Lias Ammonites of the British islands. By the late Thomas Wright.
Thomas Wright
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