Results 21 to 30 of about 2,747 (160)

Synonymy and stratigraphic ranges of Belemnopsis in the Heterian and Ohauan Stages (Callovian-Tithonian), southwest Auckland, New Zealand. [PDF]

open access: yes, 2003
Belemnopsis stevensi, Belemnopsis maccrawi, and Belemnopsis sp. A (Challinor 1979a) are synonymous; B. stevensi has priority. New belemnite material from Kawhia Harbour and Port Waikato, together with graphical study methods, indicates that many small ...
A. B. Challinor, Challinor, A.B.
core   +1 more source

Calpionellid and calcareous nannofossil evolution and calcification across Tithonian-Berriasian interval (Tethys Ocean). [PDF]

open access: yes, 2008
The Tithonian-Berriasian interval is characterized by the appearance of calpionellid and by a major calcareous nannofossil speciation episode: several genera and species first appear and evolve, showing an increase in diversity, abundance and ...
G. Andreini   +3 more
core   +2 more sources

Tithonian ammonoids (Cephalopoda, Ammonoidea) from the Vaca Muerta Formation, Neuquén Basin, West-Central Argentina [PDF]

open access: yes, 2016
Ammonoids are the most abundant and diverse group of marine invertebrates present in the Vaca Muerta Formation (early Tithonian - early Valanginian) of the Neuquén Basin (west-central Argentina).
Vennari, Verónica Vanesa
core   +1 more source

A rare protoglobigerinid association (Foraminifera) from the Tithonian of Gerecse Mts, Hungary [PDF]

open access: yes, 2004
A rich protoglobigerinid fauna was studied from the Tithonian limestones of Paprét-árok, Gerecse Mts, Hungary. The early planktonic foraminifera association was investigated in thin section and in isolated specimens as well, extracted using acetic acid ...
Wernli, Roland, Görög, Ágnes
core   +1 more source

Sequence stratigraphy of the Oxfordian to Tithonian sediments (Baisakhi Formation) in the Jaisalmer Basin [PDF]

open access: yes, 2015
The Oxfordian to Tithonian sediments deposited along the southern Tethyan margin exhibit very diverse sedimentary facies. The Jaisalmer Basin, situated along the northwestern margin of the Indian peninsula, is a good example of those preserving these ...
Pooniya, D., Pandey, D. K.
core   +1 more source

Systematics and biostratigraphy of the Perisphinctoidea(Ammonoidea) across the Tithonian/Berriasian boundary in South East France [PDF]

open access: yes, 2020
The present thesis documents and revises the systematics and biostratigraphy of the Perisphinctoidea (Ammonoidea) faunas across the Tithonian/Berriasian boundary from three basinal sections (i.e. Charens, Le Chouet and Les Combes) of eastern Drôme (South
Frau, Camille
core   +1 more source

UPPER JURASSIC (TITHONIAN) AMMONITES FROM THE SPITI SHALES IN WESTERN ZANSKAR (NW HIMALAYAS) [PDF]

open access: yes, 1990
A description is given of the ammonites collected during the Italian expedition to the Zanskar region of the NW Himalayas in 1984. The paleontological analysis is made in the context of a depositional and ecological model proposed for Spi ti Shales ...
TINTORI, A.   +3 more
core   +1 more source

Biostratigraphy and palaeoenvironment of the Kimmeridgian-Lower Tithonian pelagic deposits of the Krížna Nappe, Lejowa Valley, Tatra Mts. (southern Poland) [PDF]

open access: yes, 2012
The Upper Jurassic strata of the Krížna Unit in the Tatra Mts. comprises pelagic, fine-grained and well-oxygenated deposits. They are represented by red radiolarites and radiolarian limestones (Czajakowa Radiolarites Formation), red nodular limestones ...
Uchman, A.   +5 more
core   +2 more sources

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva   +2 more
wiley   +1 more source

Kimmeridgian-Tithonian sea-level fluctuations in the Uljanovsk-Saratov Basin (Russian Platform) [PDF]

open access: yes, 2007
The Uljanovsk-Saratov Basin, located in the southeast of the Russian Platform, presents an intriguing record of the Kimmeridgian-Tithonian sea-level fluctuations. In the Late Jurassic, this basin was a trough within the Interior Russian Sea.
Dmitry A. Ruban   +3 more
core   +1 more source

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