Results 11 to 20 of about 14,034 (253)

Mineralogy of interior jewellery ammonites of the Samara region

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2022
Background. Ammonite products are increasingly gaining in popularity. Ammonites are characterised by a variety of colour shades, shapes and sizes, making them suitable for manufacturing a wide range of souvenir and jewellery products.
D. A. Petrochenkov, E. Yu. Baraboshkin
doaj   +1 more source

An 8.5 m long ammonite drag mark from the Upper Jurassic Solnhofen Lithographic Limestones, Germany. [PDF]

open access: yesPLoS ONE, 2017
Trackways and tracemakers preserved together in the fossil record are rare. However, the co-occurrence of a drag mark, together with the dead animal that produced it, is exceptional.
Dean R Lomax   +3 more
doaj   +1 more source

New records of ostracods and ammonites from the Aalenian (mainly Concavum Zone) of the Zollernalb (Swabian Alb, SW Germany) [PDF]

open access: yesZitteliana, 2021
The lithostratigraphy and ammonite/ostracod biostratigraphy and the accompanying fauna of several sections and outcrops around the Hohenzollern (Zollernalb, SW Germany), ranging from the topmost Opalinuston Formation (uppermost Lower Aalenian) to the ...
Norbert Wannenmacher   +3 more
doaj   +3 more sources

The Ammonite Tirolites idrianus – A Paleontological Icon of the Idrija UNESCO Global Geopark (Slovenia) [PDF]

open access: yesGeoconservation Research, 2021
Idrija UNECO Global Geopark embraces the area of Idrija Municipality in the western part of Slovenia, with an area of 294 km2. Its main town Idrija, with a famous mercury ore deposit beneath, has always been a home to several European naturalists, who ...
Mojca Gorjup Kavčič, Matija Križnar
doaj   +1 more source

Ammonites and stratigraphy of the Achdorf Formation (Braunjura Group; Aalenian) at the type locality of the Wilflingen-Bank near Gosheim (W Swabian Alb) [PDF]

open access: yesZitteliana
The crassicostatum and viallii ammonite biohorizons (Bifidatum Subzone, Opalinum Zone, Lower Aalenian, Achdorf Formation) are described from the Wilflinger Steige near Gosheim.
Volker Dietze   +4 more
doaj   +3 more sources

Jamaan at the pass of Bi’rein. An Iron Age IIB-C Ammonite stronghold in central Jordan [PDF]

open access: yes, 2016
In years 2015-2016 the Zarqa Directorate of the Department of Antiquities of the Hashemite Kingdom of Jordan carried out a rescue excavation at the site of Jamaan, an Iron Age IIB-C Ammonite stronghold 16 Km north of ‘Amman.
Gharib, Romeel, Nigro, Lorenzo
core   +1 more source

Callovian–Oxfordian hecticoceratins from western India: Their biostratigraphic and palaeobiogeographic implications

open access: yesJournal of Palaeogeography, 2014
The Kutch Basin of western India is famous for its rich assemblages of the Callovian–Oxfordian ammonites. The family Oppelidae Douvillé is the second most diverse ammonite group after perisphinctids during the Middle–Upper Jurassic.
Pinaki Roy
doaj   +1 more source

Lower Cretaceous (Hauterivian-Albian) ammonite biostratigraphy in the Maestrat Basin (E Spain) [PDF]

open access: yes, 2014
Peer reviewedPublisher ...
Bover-Arnal, T.   +11 more
core   +1 more source

Conellae, enigmatic structures on cephalopod shells—shapes, distribution, and formation [PDF]

open access: yes, 2019
Conellae, enigmatic cone-shaped structures which can be found on the surface of internal moulds of cephalopod shells (predominantly of ammonoids), are regarded herein as the product of remote (biologically induced) biomineralization formed in closed-off ...
Hoffmann, René   +2 more
core   +1 more source

Mineral composition and structural features of jewelry ammonites from mine OJSC «Mikhailovcement», Ryazan region

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2019
For the first time, the mineral composition and structural features of jewelry ammonite from mine OJSC «Mikhailovcement» in Ryazan Region are studied in detail. Ammonites are associated with sediments of Callovian and Oxfordian stages.
D. A. Petrochenkov, A. V. Petrov
doaj   +1 more source

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