Naslov
Biradiolites angulosus: Paleobiological and Paleoecological Approach

Autori
Korbar, Tvrtko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Seventh International Congress on Rudist, abstracts and post-congress field guide / Filkorn, H.F. ; Johnson, C.C. ; Molineux, A. ; Scott, R.W. - Austin (TX) : Society for Sedimentary Geology (SEPM), 2005, 40-41

Skup
Cretaceous Rudist Communities and Carbonate Platforms - Environmental Feedback

Mjesto i datum
Austin (TX), Sjedinjene Američke Države, 05.06.2005. - 11.06.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
rudist; outer shell layer; paleobiology; paleoecology; Turonian

Sažetak
Constructional pattern of the right valve (RV) of Biradiolites (Radiolitidae, Hippuritoidea, Mollusca) consisted of a relatively thick calcitic outer shell layer (osl) characterized by compact and cellular alternations within a single shell. Turonian B. angulosus individuals were able to modify the RV calcitic outer shell layer structure as a response to a change in microenvironment. A result of the structural modifications is RV morphological variability related to ontogenetic plasticity and phenotypy. It is observed that juvenile and adult individuals are always attached by antero- or postero-dorsal shell. It means that either larvae commonly attached in the same manner or a larva attached by antero- or postero-dorsal shell had a better possibility to survive. Consequently, preferential life-orientation observed in some rudist communities is probably related to an environment characterized by generally directed water-currents.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA