Results 1 to 10 of about 16,387 (257)
New evidence from exceptionally “well-preserved” specimens sheds light on the structure of the ammonite brachial crown [PDF]
Scientific Reports, 2021 Ammonite soft body remains are rarely preserved. One of the biggest enigmas is the morphology of the ammonite brachial crown that has, up till now, never been recovered.
C. P. A. Smith +3 more
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Research and Geoconservation of the Albian “Giant” Ammonites Collection in the Basque Coast UNESCO Global Geopark [PDF]
Geoconservation Research, 2021 The Basque Coast UNESCO Global Geopark is known worldwide for its great thickness of Upper Cretaceous and Paleocene “flysch” formations. The K/Pg and P/E boundaries are among the most popular sites, together with the IUGS-ICS designated Selandian and ...
Asier Hilario +2 more
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Mineralogy of interior jewellery ammonites of the Samara region
Известия 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
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Overview of the Les Isnards Ammonite Slab Geoheritage Site (Digne-les-Bains, Southeastern France) [PDF]
Geoconservation Research, 2021 The Digne-les-Bains ammonite slab is one of the most impressive geosites of the UNESCO Global Geopark of Haute-Provence and Réserve Naturelle Nationale Géologique de Haute-Provence.
Didier Bert, Jean-Simon Pagès
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Geologija, 2020 The paper deals with newly discovered Valanginian-Hauterivian fauna of heteromorphic ammonites (Ancyloceratina) from locality south of the village of Leše above the Meža River valley (North Karavanke Mountains).
Matija KRIŽNAR +2 more
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Ontogenetic Trends of Sutural Complexity in Jurassic Ammonites
Geosciences, 2022 Ontogenetic sequencing of suture fractal dimensions from a single ammonite specimen was not previously accessible without extreme measures. The necessity for destruction of the full conch due to whorl overlap or, alternatively, the prohibitively ...
Katherine Marriott +7 more
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Известия высших учебных заведений: Геология и разведка, 2019 For the first time, data on the mineral composition and gemological characteristics of the jewelry-ornamental ammonites of the Republic of Adygea have been presented.
D. A. Petrochenkov
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MINERAL COMPOSITION AND STRUCTURAL FEATURES OF JEWELER AMMONITES FROM KOSTROMA REGION
Известия высших учебных заведений: Геология и разведка, 2017 Detailed mineralogical examination of ammonites of jewelry quality has been carried out by means of radiographical, X-ray microanalyses and electronic microscopy.
D. A. Petrochenkov
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Известия высших учебных заведений: Геология и разведка, 2023 Background. Along with ammonites and septaries, concretions with fossils are increasingly being used as jewelry and ornamental materials in Russia. Such concretions are characterized by a wide range of sizes, as well as high decorative and technological ...
D. A. Petrochenkov, E. Yu. Baraboshkin
doaj +1 more source