Results 11 to 20 of about 11,709 (248)

Maastricthtian ammonite and inoceramid ranges from Bay of Biscay Cretaceous-Tertiary boundary sections

open access: yesSpanish Journal of Palaeontology, 2022
New collecting of ammonites and inoceramid bivalves from Cretaceous-Tertiary boundary sections exposed al Sopelana and Zumaya, Spain, and Hendaye and Bidart (Biarritz), France, has led to better understanding of molluscan biostratigraphy in each of these
P. Ward
semanticscholar   +1 more source

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

Uses for Incomplete Ammonite Sutures: Lateral Lobe and Second Saddle as Markers of Sutural Complexity

open access: yesGeosciences, 2021
Ammonoid sutures are geometric patterns formed by the intersection of the septa and the shell wall, and have long been a diagnostic tool for ammonite researchers for such applications as species identification, taxonomic relationships, ontogenetic change,
Katherine Marriott, John A. Chamberlain
doaj   +1 more source

Late Barremian-Early Aptian Ammonites from the Tirgan Formation, Kopet-Dagh Sedimentary Basin, NE Iran [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2019
During the recent field research on the Tirgan Formation in the west of Kopet-Dagh sedimentary basin, ammonite assemblages were obtained from the carbonate strata of this formation. This new finding is important for stratigraphical purpose.
Morteza Taherpour Khalil Abad   +3 more
doaj   +1 more source

The last ammonite? [PDF]

open access: yesBulletin of the Geological Society of Denmark, 1999
A fragment of red-brown flint with imprints of two ammonite aptychi has been found loose on the beach of the Boesdal quarry on Stevns Klint. The quarry exposes only Lower Danian bryozoan limestone. The nearest occurrence of Maastrichtian strata is 400 m to the west in Skeldervig bay, north of Korsnæb, where 50 cm of chalk with small dark-grey and black
Surlyk, Finn, Milàn, Jesper
openaire   +1 more source

The Bajocian to Kimmeridgian (Middle to Upper Jurassic) ammonite succession at Sentralbanken High (core 7533/3-U-1), Barents Sea, and its stratigraphical and palaeobiogeographical significance

open access: yesVolumina Jurassica, 2020
Ammonites recovered from Upper Bajocian to Upper Kimmeridgian strata in a core drilled at Sentralbanken High in the northern Barents Sea are described and chronostratigraphically interpreted.
A. Wierzbowski, M. Smelror
semanticscholar   +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

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