Results 1 to 10 of about 5,162 (241)

Teeth of embryonic or hatchling sauropods from the Berriasian (Early Cretaceous) of Cherves-de-Cognac, France [PDF]

open access: goldActa Palaeontologica Polonica, 2016
The Cherves-de-Cognac site (Charente, France) has yielded a diverse continental microvertebrate fauna of Berriasian (earliest Cretaceous) age. Dinosaur remains are rare, but include three teeth that are referrable to an indeterminate sauropod, which ...
Paul M. Barrett   +3 more
doaj   +8 more sources

Tithonian-berriasian beds of dedine stream near Golubac [PDF]

open access: diamondGlasnik Srpskog Geografskog Društva, 2007
The possibilities for stratigraphical precision between the Upper Jurassic and the Lower Cretaceous in pelagic development are considered for the locality of Dedine stream.
Carević Ivana, Jovanović Velimir
doaj   +5 more sources

Some perisphinctoid ammonites of the Štramberk Limestone and their dating with associated microfossils (Tithonian to Lower Berriasian, Outer Western Carpathians, Czech Republic) [PDF]

open access: diamondGeologica Carpathica, 2017
The present contribution deals with the taxonomy of seven species of perisphinctoid ammonite from the Štramberk Limestone (Outer Western Carpathians, Czech Republic) deposited in Moravian-Silesian museums.
Vašíček Zdeněk   +2 more
doaj   +2 more sources

High-precision U–Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic–Cretaceous boundary [PDF]

open access: yesSolid Earth, 2019
The numerical age of the Jurassic–Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U–Pb geochronological data around the Jurassic–Cretaceous boundary in two distinct sections from different ...
L. Lena   +10 more
doaj   +4 more sources

The calcareous nannofossils and magnetostratigraphic results from the Upper Tithonian–Berriasian of Feodosiya region (Eastern Crimea) [PDF]

open access: yesGeologica Carpathica, 2019
This article is concerned with nannofossil study of Tithonian–Berriasian sediments of Eastern Crimea. The NJT 16, NJT 17a, NJT 17b, NKT, and NK 1 nannofossil zones were determined. The occurrence of Nannoconus kamptneri minor, one of the potential marker-
Arkadiev Vladimir   +4 more
doaj   +3 more sources

Insect and Plant Diversity in Hot-Spring Ecosystems during the Jurassic-Cretaceous Boundary from Spain (Aguilar Fm., Palencia) [PDF]

open access: yesBiology, 2022
Hydrothermal palaeoenvironments are very uncommon in Upper Jurassic and Lower Cretaceous deposits worldwide. We present new plant and insect remains from travertines formed during the Jurassic-Cretaceous boundary in northern Spain (Aguilar Fm., Palencia ...
Artai A. Santos   +5 more
doaj   +2 more sources

CALCAREOUS NANNOFOSSIL BIOSTRATIGRAPHY OF UPPER CALLOVIAN-LOWER BERRIASIAN SUCCESSIONS FROM THE SOUTHERN ALPS, NORTH ITALY

open access: greenRivista Italiana di Paleontologia e Stratigrafia, 2010
Calcareous nannofossil biostratigraphy was investigated in uppermost Callovian-lower Berriasian sections from Southern Alps, previously detected through magnetostratigraphy, in order to achieve an integrated stratigraphic framework valid at low latitudes.
CRISTINA EMANUELA CASELLATO
doaj   +2 more sources

Two look-alike dasycladalean algae: Clypeina isabellae masse, Bucur, Virgone & Delmasso, 1999 from the Berriasian of Sardinia (Italy) and Clypeina loferensis sp. N. from the upper Jurassic of the Northern Calcareous Alps (Austria) [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2009
New material from the Berriasian of eastern Sardinia, Italy, and from the NW of Sardinia published by PECORINI in 1972 as 'Clypeina sp. A', allows a better characterization and an emended diagnosis of Clypeina isabellae MASSE et al., 1999 from the ...
Schlagintweit Felix   +2 more
doaj   +3 more sources

The Jurassic/Cretaceous boundary and high resolution biostratigraphy of the pelagic sequences of the kurovice section (Outer Western Carpathians, the northern Tethyan margin) [PDF]

open access: yesGeologica Carpathica, 2019
Microfacies and high resolution studies at the Kurovice quarry (Czech Republic, Outer Western Carpathians) on calpionellids, calcareous and non-calcareous dinoflagellate cysts, sporomorphs and calcareous nannofossils, aligned with paleomagnetism, allow ...
Svobodová Andrea   +6 more
doaj   +3 more sources

New ophthalmosaurid ichthyosaurs from the European Lower Cretaceous demonstrate extensive ichthyosaur survival across the Jurassic-Cretaceous boundary. [PDF]

open access: yesPLoS ONE, 2012
BackgroundIchthyosauria is a diverse clade of marine amniotes that spanned most of the Mesozoic. Until recently, most authors interpreted the fossil record as showing that three major extinction events affected this group during its history: one during ...
Valentin Fischer   +9 more
doaj   +9 more sources

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