02403nas a2200133   4500008004100000245009300041210006900134260003000203520183900233100001702072700002802089700001902117856013302136       2012                        eng d00aLarger benthic foraminifera – faunal pioneers in mixed carbonate-siliciclastic systems0 aLarger benthic foraminifera faunal pioneers in mixed carbonatesi  aCharlotte, NCc04/11/20123 aLarger benthic foraminifera are one of the most abundant and widespread organisms in shallow marine tropical
environments. Their role as rapid colonizers of new substrates has been suggested, but little is still known to support
this idea. To address this question, larger benthic foraminifera assemblages have been studied in the
paleoenvironmental reconstruction of a Langhian (Middle Miocene) shallow-water patch reef, as part of a broader multitaxon
fossil comunity analysis, including corals, coralline algae, and bryozoans. The studied outcrop (approx. 80 m
wide and 25 m thick) is located at the northeast margin of the Kutai Basin near Bontang (Indonesia).
The patch-reef was developed in mixed carbonate-siliciclastic depositional environment and despite the high
terrigenous input affecting water transparency, this reef contains a diverse marine biota. Five different facies types were
distinguished based on lithology and fossil content: foraminifera packstone, bioclastic packstone with foralgal
communities, thin-platy coral sheetstone, platy-tabular coral platestone, and shales. Excluding the fossil barren shales
facies, only larger benthic foraminifera occur in all four remaining facies types, showing the ability to rapidly adapt to
changes in environment. In the current study, high siliciclastic input caused fluctuations in light levels, but also resulted
in deposition of soft-bottom substrate. In newly developed conditions, the larger benthic foraminifera appear first and
mark the initiation of reef growth.
The persistence of LBF throughout the fossil reef succession indicates their high tolerance to terrigenous input and also
highlight the role of foraminifera as primary colonizers, proving themselves as important faunal pioneers, particularly in
mixed carbonate-siliciclastic systems.1 aNovak, Vibor1 aSantodomingo, Nadiezhda1 aRenema, Willem  uhttps://ipaeg.myspecies.info/content/larger-benthic-foraminifera-%E2%80%93-faunal-pioneers-mixed-carbonate-siliciclastic-systems00682nas a2200181   4500008004100000245008700041210006900128260001500197100001700212700002800229700001800257700002500275700002000300700002000320700002500340700001900365856011600384       2012                        eng d00aEnvironmental reconstruction of a Langhian patch reef (East Kalimantan, Indonesia)0 aEnvironmental reconstruction of a Langhian patch reef East Kalim  c29/03/20121 aNovak, Vibor1 aSantodomingo, Nadiezhda1 aRösler, Anja1 aDi Martino, Emanuela1 aBraga, Juan, C.1 aTaylor, Paul, D1 aJohnson, Kenneth, G.1 aRenema, Willem  uhttps://ipaeg.myspecies.info/content/environmental-reconstruction-langhian-patch-reef-east-kalimantan-indonesia