In situ-preservation of jaws in the upper Turonian acanthoceratid ammonite Prionocyclus germari (Reuss, 1845): Palaeobiological and taphonomic aspects

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10475830" target="_blank" >RIV/00216208:11310/24:10475830 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=DTPRTvCUaz" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=DTPRTvCUaz</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cretres.2023.105683" target="_blank" >10.1016/j.cretres.2023.105683</a>

Result language
angličtina
Original language name
In situ-preservation of jaws in the upper Turonian acanthoceratid ammonite Prionocyclus germari (Reuss, 1845): Palaeobiological and taphonomic aspects
Original language description
Cephalopod mandibles are rare in the Bohemian Cretaceous Basin (BCB) of Central Europe, occurring only as isolated jaw elements, the sole exception being a specimen of Yezoites bladenensis found with a lower jaw in situ in the second half of the 19th century. Here, we present a second record, a specimen of the acanthoceratoid ammonite Prionocyclus germari (Upper Cretaceous, upper Turonian). The ammonite preservation shows similarities to ammonoids from Solnhofen-type Lagerstaeurotten, including phosphatised siphuncles, while the flattened ammonite conch is poorly preserved or fully dissolved. The lower jaw of P. germari is referred to the genus Praestriaptychus. Linking the jaw apparatus with an index ammonite taxon of the uppermost Turonian fills a gap in our knowledge of Upper Cretaceous acanthoceratoid ammonite jaw anatomy. The preservation of altered (secondarily carbonised) organic matter has been revealed by Raman spectroscopy analysis at the tip of the aptychus. The associated fauna and flora, consisting of complete crustaceans, fish, chondrichthyans and gymnosperm plant remains, reflect an unusual and unique preservational/taphonomic window within the BCB.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology

Project
<a href="/en/project/GC21-30418J" target="_blank" >GC21-30418J: Linking high- and mid-latitude sedimentary archives of the Late Cretaceous greenhouse: correlations between Northern Siberia and Central Europe</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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