@article {2075, title = {Dating Borneo{\textquoteright}s Deltaic Deluge: Middle Miocene progradation of the Mahakam Delta}, journal = {Palaios}, year = {In Press}, author = {Nathan Marshall and Vibor Novak and Irfan Cibaj and Wouter Krijgsman and Willem Renema and Jeremy Young and Nicholas Fraser and Alexander Limbong and Morley, Robert J.} } @article {2017, title = {Microbial carbonates in Miocene reefs in the Mahakam Delta in East Kalimantan, Indonesia}, journal = {Sedimentary Geology}, address = {Berlin, Germany}, abstract = {

Coral patch reefs in the Miocene Mahakam Delta in East Kalimantan (Borneo, Indonesia) grew in shallow marine turbid waters. These patch reefs developed from delta front to deeper (prodelta) settings in areas with temporary reduced siliciclastic input. Langhian reef deposits are well exposed in limestone quarries in the Samarinda area and locally include microbial carbonates. Two different types of microbial carbonates have been found around Samarinda in two localities 2 km apart. These sections were logged in detail and 208 samples were collected. Meso and macrostructure of microbialites were identified at the outcrops. Thin sections from carbonate samples were examined under optical microscope and microfacies were classified using the Dunham (1962) and Insalaco (1998) terms. The carbonate content was analyzed using Total Inorganic Carbon analysis, with 12\% carbon as a standard for carbon calibration. In the northern section, microbialites occur as low-relief domes, up to 2 m wide and 0.5 m high, with internal lamination, developed around large coral fragments at the transition from reef deposits to fine-grained siliciclastics.
The second type of microbialites has been found in the southern locality as decimeter-scale nodules (\"megaoncoids\") formed around nuclei of large coral fragments. Small nodules were bound together into bigger nodules. Microbial micrite with laminated to digitated fabrics intergrew with coralline algae to form the thick covers of these \"megaoncoids\", which laterally change into coral boundstones. In both sections microbialites are not components of the reef framework. They grew around large coral fragments on the flanks of the patch reefs. The microbialites that form low relief domes developed on nearly flat, stable seafloor seawards of the patch reef. The \"megaoncoids\" in the southern section formed as a result of downslope movement of coral fragments coated by microbialite/coralline algal crust. The steep slope at the flank of the patch reef favored falling and overturning of encrusted corals and continued growth of microbial crusts on other sides of nodules.

}, author = {Vedrana Pretkovi{\'c} and Juan C. Braga and Vibor Novak and Anja R{\"o}sler and Willem Renema} } @article {2062, title = {Shells from seagrass meadows and coral carpets: How isotopic signals can help to distinguish palaeohabitats }, journal = {The Malacologist}, year = {2013}, type = {Presentation at the Molluscan Forum, London, UK}, author = {Sonja Reich and Frank P. Wesselingh and Viola Warter and Willem Renema} } @article {2062, title = {Faunal composition and isotopic signals of mollusk shells indicate seagrass meadows in the Miocene of Indonesia}, journal = {Revista de Estudos A{\c c}oreanos, Book of Abstracts}, volume = {8}, year = {2013}, pages = {169}, type = {Poster at the World Congress of Malacology, Ponta Delgada, Azores.}, author = {Sonja Reich and Frank P. Wesselingh and Viola Warter and Willem Renema} } @article {2062, title = {Gastropods indicate seagrass meadows (at San Salvador, Bahamas)}, journal = {Revista de Estudos A{\c c}oreanos, Book of Abstracts}, volume = {8}, year = {2013}, pages = {350-351}, type = {Poster at the World Congress of Malacology, Ponta Delgada, Azores.}, author = {Sonja Reich} } @article {2013, title = {Mollusk faunas as indirect indicators for palaeo-seagrass vegetation}, journal = {Terra Nostra }, volume = {2012}, year = {2012}, pages = {137-138}, type = {Oral Presentation at the Annual Meeting of the Paleontological Society, Berlin, Germany}, abstract = {

Seagrass ecosystems play an important role in sedimentation processes and nutrient cycling and support local biodiversity by providing food and shelter for numerous associated organisms. These ecosystems have been around since the Late Cretaceous. In order to understand their emergence in geological time and their response to past perturbations we have to be able to recognize seagrass communities in the fossil record. However, seagrass itself hardly fossilizes and therefore we are searching for indirect indicators to recognize ancient seagrass vegetation. In this contribution we review molluscan evidence for palaeo-seagrass settings. Indicator species are rare since the majority of seagrass associated molluscs occurs in other marine habitats as well. Furthermore, those habitats appear to be patchy, both spatial and temporal, resulting in mixed occurrences of seagrass and non-seagrass faunas. Often only the high abundance of certain mollusc groups and the general taxonomic composition of a fauna points to seagrass environments. However, the distribution of gastropod trophic guilds in species richness versus abundance data appears to yield patterns that may be very characteristic for the identification of fossil seagrass associated faunas. We are currently applying Indirect PaleoSeagrass Indicators (IPSI\’s) to a number of fossil and modern shelly samples, both from seagrass and non-seagrass environments. We also briefly review potential sedimentary and geochemical IPSI\’s as well as fossil groups different than molluscs. Identifying seagrass environments enables us to assess diversity trends in such ecosystems through time and to study their response over time intervals with major environmental and climate change.

}, author = {Sonja Reich and Frank P. Wesselingh and Willem Renema} } @article {2057, title = {A highly diverse molluscan seagrass fauna from the early Burdigalian (early Miocene) of Banyunganti (south-central Java, Indonesia)}, journal = {Annals of the Natural History Museum in Vienna, Serial A}, volume = {116}, year = {2014}, pages = {5-126}, author = {Sonja Reich and Frank P. Wesselingh and Willem Renema} } @article {2057, title = {Indirect paleo- seagrass indicators (IPSIs): a review}, journal = {Earth Science Reviews}, year = {Submitted}, author = {Sonja Reich and Emanuela Di Martino and Frank P. Wesselingh and Jonathan A. Todd and Willem Renema} } @article {2056, title = {Diversity and paleoecology of Miocene coral-associated mollusks from East Kalimantan (Indonesia)}, journal = {Palaios}, year = {Submitted}, author = {Aires Kusworo and Sonja Reich and Frank P. Wesselingh and Nadiezhda Santodomingo and Kenneth G. Johnson and Jonathan A. Todd and Willem Renema} } @article {2054, title = {Distribution of larger foraminifera in mixed carbonate-siliciclastic systems}, journal = {Journal of Asian Earth Sciences}, author = {Vibor Novak and Willem Renema} } @article {2054, title = {Early Miocene larger foraminifera assemblage of the Taballar Limestone (East Kalimantan)}, journal = {Journal of Foraminiferal Research}, author = {Vibor Novak} } @article {2053, title = {Larger foraminifera as environmental discriminators in Miocene mixed carbonate-siliciclastic systems}, journal = {Palaios}, year = {In Press}, author = {Vibor Novak and Willem Renema} } @article {2044, title = {Age of Neogene fossil localities in the Northern Kutei Basin}, journal = {Palaios}, year = {Submitted}, author = {Willem Renema and Viola Warter and Nathan Marshall and Vibor Novak} } @article {2043, title = {Paleoecological significance of stable isotope ratios in Miocene tropical shallow marine habitats (Indonesia)}, journal = {Palaios}, year = {In Press}, author = {Sonja Reich and Viola Warter and Frank P. Wesselingh and H. Zwaan and Willem Renema and Lucas Lourens} } @article {2042, title = {Late Miocene seasonal to sub-decadal climate variability in the Indo-West Pacific (East Kalimantan, Indonesia) preserved in giant clams}, journal = {Palaios }, year = {In Press}, author = {Viola Warter and Wolfgang M{\"u}ller and Frank P. Wesselingh and Jonathon A. Todd and Willem Renema} } @article {2041, title = {Evolutionary history of the reef building coralline algae (Rhodophyta)}, journal = {Journal of Phycology}, abstract = {

Mastophoroids in the sense of Harvey et al. (2003) are the main components of shallow coral reef environments. Their status as a monophyletic subfamily is lost, but different subsequent proposals about the taxonomic relationships of their genera were declared to be untenable. Here we present a new, more complete phylogeny of Mastophoroideae sensu Harvey et al. (2003) with a temporal dimension reflecting the evolutionary history of this clade which is very important in ecological and structural means in coral reefs. We agree with Kato et al. (2011) to maintain the Lithophylloideae, Corallinoideae and Metagoniolithoideae, to reduce the Mastophoroideae and to establish the new subfamilies Hydrolithoideae, Neogoniolithoideae and Porolithoideae. We propose two new genera Adeylithon gen. nov. with the type species A. conicum and Harveylithon gen. nov. with the type species H. rupestre. The calibration of the molecular clock of the genetic marker SSU supposes a Cenozoic origin of most of the clades of the former mastophoroids sensu Harvey et al. (2003) and a separation from Hapalidiaceae in the boundary between early and late Cretaceous.

}, author = {Anja R{\"o}sler and Francisco Perfectti and Viviana Pe{\~n}a and Juan Carlos Braga} } @article {2040, title = {Coralline Algae from the Miocene Mahakam Delta (East Kalimantan, SE Asia)}, journal = {Palaios}, year = {In Press}, abstract = {

Miocene crustose coralline algae (CCA) from the South East Asia are poorly known, although the Miocene is the epoch of the onset of the biodiversity hotspot in the region and CCA are crucial to understand the evolutionary history of reef building. To fill this knowledge gap, CCA from Lower and Middle Miocene reefs and related carbonates in the Kutai Basin in East Kalimantan (Borneo, Indonesia) have been studied. The Kutai Basin was dominated by siliciclastic sediments of the Proto-Mahakam delta and only locally carbonate buildups occur laterally to or within the deltaic succession. CCA in the Kutai Basin occur in low-energy shallow-water platform carbonates and in association with coral reefs, encrusting the corals or bioclasts. Two main CCA assemblages have been recognized: 1) A shallow-water assemblage (S-assemblage), dominated by Neogoniolithon spp., thick crusts of Spongites spp., and Hydrolithon spp.; and 2) the D-assemblage, mainly consisting of thin crusts of Lithothamnion spp., Mesophyllum spp., and Sporolithon spp., which grew in darker waters. Light reduction in reefs in the Proto-Mahakam delta was due to increased water depth or higher turbidity by higher siliciclastic input. Assemblages with intermediate composition (I-assemblages) can also be found. Common CCA with large cells fusions and groups of heterocysts, typical features of modern reef CCA, in the S-assemblages in the Middle Miocene of East Kalimantan reflect the initiation of the reef-building CCA flora in the Indo-Pacific region. The occurrence of this kind of CCA confirms the biogeographic differentiation of a tropical reef flora.

}, author = {Anja R{\"o}sler and Vedrana Pretkovi{\'c} and Vibor Novak and Willem Renema and Juan C. Braga} } @article {2029, title = {Changes in the Indonesian Throughflow and southeast Asian hydroclimate during the Middle-Miocene Climate Transition}, journal = {Geophysical Research Abstracts}, volume = {15}, year = {2013}, pages = {9123}, author = {Frigola Boix, Amanda and Prange, Matthias and Schulz, Michael} } @article {2026, title = {Polystira to Pan-Tropica: developing strategies for analysing molluscan hyperdiversity}, journal = {GSA Abstracts with Programs}, volume = {44}, year = {2012}, pages = {624-625}, author = {Todd, J. A.} } @article {1991, title = {Asynchronous response of coral reefs to Late Cenozoic global environmental change}, journal = {Geological Society of America Abstracts with Programs}, volume = {44}, year = {2012}, pages = {623}, address = {Charlotte, North Carolina, USA}, url = {https://gsa.confex.com/gsa/2012AM/webprogram/Paper208384.html}, author = {Kenneth G. Johnson and Nadiezhda Santodomingo and Brian R. Rosen} } @article {1990, title = {Development of a turbid reef in the Middle Miocene (East Kalimantan, Indonesia)}, journal = {Geological Society of America Abstracts with Programs}, volume = {77}, year = {2012}, pages = {623}, address = {Charlotte, North Carolina, USA}, keywords = {INDONESIA, marginal ecosystems, Miocene, palaeonvironmental reconstruction, patch reefs}, url = {https://gsa.confex.com/gsa/2012AM/webprogram/Paper209284.html}, author = {Nadiezhda Santodomingo and Vibor Novak and Nathan Marshall and Emanuela Di Martino and Nicholas Fraser and Elena LoGiudice and Vedrana Pretkovi{\'c} and Anja R{\"o}sler and Willem Renema and Kenneth G. Johnson} } @article {1987, title = {Bryozoan diversity in the Miocene of East Kalimantan (Indonesia)}, journal = { Geological Society of America Abstracts with Programs. Vol. 44, No. 7, p.624 }, volume = {44}, year = {2012}, pages = {624}, address = {Charlotte, North Carolina }, keywords = {BRYOZOA, Diversity, East Kalimantan, Miocene, TAXONOMY}, url = {https://gsa.confex.com/gsa/2012AM/webprogram/Paper205773.html}, author = {Emanuela Di Martino and Paul D Taylor} } @article {1626, title = {Hopping Hotspots: global shifts in marine biodiversity}, journal = {Science}, volume = {321}, year = {2008}, pages = {654-657}, author = {Willem Renema and Bellwood, D. R. and Juan Carlos Braga and Bromfield, K. and Hall, R. and Kenneth G. Johnson and Lunt, P. and Meyer, C. P. and McMonagle, L. B. and Morley, R. J. and O{\textquoteright}dea, A. and Jonathan A. Todd and Frank P. Wesselingh and Wilson, M. E. J. and Pandolfi, J. M.} }