Results 71 to 80 of about 613 (184)

Oxfordian and Kimmeridgian "Aspidoceras" in the Mediterranean. A methodological approach

open access: yesEstudios Geológicos, 1987
En el presente trabajo se lleva a cabo un análisis contrastador de la Hipótesis Nula establecida como base metodológica para la investigación evolutiva de los"Aspidoceras" mediterráneos (Checa & Olóriz, 1985). Esta contrastación se lleva a cabo integrando nuevos datos y forma parte de un programa de investigación cuidadosamente planificado.
A. Checa, F. Olóriz
openaire   +4 more sources

Carbonate Sedimentation Rates Today and in the Past: Holocene of Florida Bay, Bahamas, and Bermuda vs. Upper Jurassic and Lower Cretaceous of the Jura Mountains (Switzerland and France)

open access: yesGeologia Croatica, 2003
Lagoonal to intertidal sediments from the Holocene in Florida Bay,on the Bahamas, and in Bermuda are compared to similar facies in theKimmeridgian and Berriasian of the Swiss and French Jura Mountains.Dating by 14C permits the estimation of sediment ...
Andre Strasser, Elias Samankassou
doaj   +1 more source

Variability of continental depositional systems during lowstand sedimentation: an example from the Kimmeridgian of the Neuquen Basin, Argentina

open access: yesLatin American Journal of Sedimentology and Basin Analysis, 2021
Several second order lowstand wedges are recognized in the Jurassic-Early Cretaceous sedimentary record of the backarc Neuquén Basin (central-west Argentina).
Luis A. Spalletti, Gonzalo D. Veiga
doaj   +2 more sources

The Jurassic of North-East Greenland: Jurassic dinoflagellate cysts from Hochstetter Forland, North-East Greenland [PDF]

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2004
Three sections in Hochstetter Forland, North-East Greenland, referred to the Jurassic Payer Dal and Bernbjerg Formations, have been analysed for dinoflagellate cysts.
Piasecki, Stefan, Stemmerik, Lars
doaj  

Review of the dental pattern in the squalomorph shark Protospinax annectans , and a description of two new Jurassic shark genera

open access: yesActa Palaeontologica Polonica
The extinct elasmobranch Protospinax is an intriguing shark known mostly from isolated teeth and rare complete skeletons. Most previous studies focused on differences in isolated teeth for taxonomic assignments, with little to no considerations of dental
Arnaud Begat   +5 more
doaj   +1 more source

Kimmeridgian pliosaurids (Sauropterygia, Plesiosauria) from Tlaxiaco, Oaxaca, southern Mexico

open access: yesRevista Mexicana de Ciencias Geológicas, 2015
Fil: Barrientos Lara, Jair Israel. Universidad Nacional Autónoma de México.
Jair Israel Barrientos-Lara   +2 more
openaire   +4 more sources

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