TY - CONF T1 - Oligocene and Miocene history of reef corals and coral reefs in eastern Borneo (East Kalimantan, Indonesia and Sabah, Malaysia) T2 - 10th North American Paleontological Convention Y1 - 2014 A1 - Kenneth G. Johnson A1 - Willem Renema A1 - Nadiezhda Santodomingo JF - 10th North American Paleontological Convention PB - The Paleontological Society Special Paper, 22 CY - Gainesville, Florida ER - TY - JOUR T1 - Diversity and paleoecology of Miocene coral-associated mollusks from East Kalimantan (Indonesia) JF - Palaios Y1 - Submitted A1 - Aires Kusworo A1 - Sonja Reich A1 - Frank P. Wesselingh A1 - Nadiezhda Santodomingo A1 - Kenneth G. Johnson A1 - Jonathan A. Todd A1 - Willem Renema ER - TY - Generic T1 - On the origins of the coral diversity in Southeast Asia T2 - 12th International Coral Reef Symposium Y1 - 2012 A1 - Nadiezhda Santodomingo A1 - Kenneth G. Johnson A1 - Willem Renema AB -

Evidences from palaeontological and molecular studies suggest that the formation of the SE Asian ancestral centre of diversity occurred during the Miocene. Under the umbrella of the Throughflow project, delta-front patch reefs from 42 outcrops were studied in East Kalimantan (Indonesia), including extensive collections of tens of thousands of specimens within 265 samples. This research aims to answer how diverse were corals during the Miocene and which environmental factors played a role in their diversification on both, temporal and spatial scales. Coral morphologies seem to respond to the gradient of siliciclastic input created by the Mahakan Delta system. Platy-coral assemblages were common in the vicinity of the delta, characterized by a higher turbid-water regime, and mainly from the Early to Middle Miocene (up to Serravallian age). On the other hand, communities of branching corals mixed with scattered massive coral heads were more frequent during the Late Miocene (Tortonian to Messinian age) in settings located towards the north, far-off the delta influence. Although preliminary (<10% of samples examined), species diversity was high in both platy and branching coral assemblages, and comparable to modern coral settings living under similar environmental conditions. A total of 51 morphospecies (36 genera) have been identified so far, from which only three genera are considered as extinct, Dictyaraea, Anisocoenia, and Fungophyllia. Whether the observed species turnover is due to major global environmental changes after the Middle Miocene, or it is merely explained by switching of the Mahakan Delta gradient, or a combination of both, is an aspect to be examined in further integrated analysis including geochemistry and sedimentology.

JF - 12th International Coral Reef Symposium ER - TY - CONF T1 - Origins of coral diversity in Southeast Asia T2 - 5 International Symposium on Deep-Sea Corals Y1 - 2012 A1 - Nadiezhda Santodomingo A1 - Kenneth G. Johnson A1 - Willem Renema AB -

Southeast Asia hosts the maximum centre of coral diversity. Evidence from palaeontological and molecular studies suggests that the Miocene was an important period for diversification in the region. However, the fossil record is markedly undersampled. Of the \~{}200 species of azooxanthellate corals present in the region, only 49 species are known in the fossil record. As part of the Throughflow ITN project, we are collecting new data to document the Miocene diversity of zooxanthellate and azooxanthellate scleractinians from shallow and deep-water habitats preserved in outcrops of East Kalimantan (5-20 Million years old). This project has completed two five-week long field seasons and is currently processing samples. So far, we have identified the azooxanthellate taxa Caryophyllia, Stephanocyathus, Flabellum, Heterocyathus, and Madrepora. Preservation can be excellent allowing geochemical analysis to understand the paleoenviromental conditions in which these species were living. In combination with parallel studies on shallow water ecosystems, these new data provide insights to the origins of the high diversity in this region.

JF - 5 International Symposium on Deep-Sea Corals CY - Amsterdam ER - TY - JOUR T1 - A diverse patch reef from turbid habitats in the Middle Miocene (East Kalimantan, Indonesia) JF - Palaios Y1 - Submitted A1 - Nadiezhda Santodomingo A1 - Vibor Novak A1 - Vedrana Pretković A1 - Nathan Marshall A1 - Anja Rösler A1 - Emanuela Di Martino A1 - Elena LoGiudice A1 - Sonja Reich A1 - Juan Carlos Braga A1 - Willem Renema A1 - Kenneth G. Johnson ER - TY - CONF T1 - Diversity and palaeoecology of Miocene coral-associated molluscs from East Kalimantan T2 - SAGE2013: Southeast Asian Gateway Evolution Y1 - 2013 A1 - Aires Kusworo A1 - Sonja Reich A1 - Frank P. Wesselingh A1 - Nadiezhda Santodomingo A1 - Willem Renema AB -

Currently, SE Asia is the global marine centre of diversity. High diversity is concentrated in and around reefs. A large variety of organisms, including corals and fish, but also molluscs, crustaceans and echinoderms contribute to this high diversity. In order to understand the timing and the context of the origin of the modern biodiversity hotspot, the fossil record needs to be documented. However, reef facies often suffer strong diagenesis, compromising the fossil record of reef and reef-associated organisms. Here we present an assessment of a well-preserved Late Miocene mollusc fauna from Bontang (East Kalimantan, Indonesia). The fauna is found in association with branching corals, dominated by Dictyaraea. The mollusc fauna is dominated by predatory and browsing carnivorous snails and includes reefal indicators such as the gastropod Coralliophyla and the bivalve Tridacna. The new Bontang fauna gives a glimpse of the diversity and ecological composition of a Late Miocene mollusc fauna from a so-called coral-carpet environment.

JF - SAGE2013: Southeast Asian Gateway Evolution CY - Museum fuer Naturkunde, Berlin ER - TY - JOUR T1 - Environmental reconstruction of a late Burdigalian (Miocene) patch reef in deltaic deposits (East Kalimantan, Indonesia) JF - Palaeogeography, Palaeoclimatology, Palaeoecology Y1 - 2013 DO - http://dx.doi.org/10.1016/j.palaeo.2013.01.009 A1 - Vibor Novak A1 - Nadiezhda Santodomingo A1 - Anja Rösler A1 - Emanuela Di Martino A1 - Juan Carlos Braga A1 - Paul D Taylor A1 - Kenneth G. Johnson A1 - Willem Renema SP - 110 EP - 122 AB -

Most studies of Cenozoic shallow-water, mixed carbonate-siliciclastic depositional systems have focused on their sedimentology. To date, however, comprehensive analyses of biotas and biofacies of Indo-West Pacific reefs that developed in mixed carbonate-siliciclastic systems are lacking. This study describes the palaeoenvironment and biodiversity of a late Burdigalian patch reef that developed in a mixed carbonate-siliciclastic depositional system. The studied exposure is located at the northeast margin of the Kutai Basin near Bontang (Indonesia), and is approximately 80 m wide and 25 m thick. Multi-taxon analysis of the most abundant fossil groups, including larger benthic foraminifera, corals, coralline algae, and bryozoans, aims to provide a model for environmental interpretation that will allow comparison with similar deposits of Indo-West Pacific region. Based on fossil content and lithology, five different facies types have been distinguished: foraminiferal packstone (FP), bioclastic packstone with foralgal communities (BP), thin-platy coral sheetstone (CS), platy-tabular coral platestone (CP), and shales (S). Among larger benthic foraminifera, smaller and more robust forms dominate in the FP and BP facies, while larger and flatter forms are the most abundant in the CS and CP facies. Thin-platy corals are dominant in the CS facies and gradually change into thicker platy-tabular forms in the CP facies. Assemblages and growth forms of coralline algae show no major differences between the facies types and are dominated by melobesioids and Sporolithon. The majority of bryozoan species are encrusting and were found only in the CS facies. Light-dependent organisms occurring in the reef indicate low light conditions typical for mesophotic reefs. The relatively small size of this reef complex and quite distinct vertical changes in the facies types, combined with the high siliciclastic content in most of the units, points to strong terrigenous input affecting water transparency as the main factor controlling the reef growth.

VL - 374 ER - TY - CONF T1 - Larger benthic foraminifera – faunal pioneers in mixed carbonate-siliciclastic systems T2 - 2012 GSA Annual Meeting Y1 - 2012 A1 - Vibor Novak A1 - Nadiezhda Santodomingo A1 - Willem Renema AB - Larger 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. JF - 2012 GSA Annual Meeting CY - Charlotte, NC ER - TY - CONF T1 - Origins of coral diversity in Southeast Asia T2 - 5th International Symposium on Deep-Sea Corals 2012 Y1 - 2012 A1 - Nadiezhda Santodomingo A1 - Kenneth G. Johnson A1 - Willem Renema A1 - the Throughflow Project JF - 5th International Symposium on Deep-Sea Corals 2012 CY - Amsterdam, The Netherlands ER - TY - JOUR T1 - Development of a turbid reef in the Middle Miocene (East Kalimantan, Indonesia) JF - Geological Society of America Abstracts with Programs Y1 - 2012 A1 - Nadiezhda Santodomingo A1 - Vibor Novak A1 - Nathan Marshall A1 - Emanuela Di Martino A1 - Nicholas Fraser A1 - Elena LoGiudice A1 - Vedrana Pretković A1 - Anja Rösler A1 - Willem Renema A1 - Kenneth G. Johnson SP - 623 KW - INDONESIA KW - marginal ecosystems KW - Miocene KW - palaeonvironmental reconstruction KW - patch reefs CY - Charlotte, North Carolina, USA VL - 77 UR - https://gsa.confex.com/gsa/2012AM/webprogram/Paper209284.html IS - 7 ER - TY - CONF T1 - Palaeoenvironmental reconstruction of a Miocene patch reef in East Kalimantan (Indonesia): a close-up on the bryozoan component T2 - IBA Larwood Meeting Y1 - 2012 A1 - Emanuela Di Martino A1 - Paul D. Taylor A1 - Vibor Novak A1 - Nadiezhda Santodomingo A1 - Anja Rösler A1 - Juan Carlos Braga A1 - Kenneth G. Johnson A1 - Willem Renema JF - IBA Larwood Meeting CY - Brno Czech Republic ER - TY - CONF T1 - Environmental reconstruction of a Langhian patch reef (East Kalimantan, Indonesia) T2 - Lyell Meeting 2012 Y1 - 2012 A1 - Vibor Novak A1 - Nadiezhda Santodomingo A1 - Anja Rösler A1 - Emanuela Di Martino A1 - Juan C. Braga A1 - Paul D Taylor A1 - Kenneth G. Johnson A1 - Willem Renema JF - Lyell Meeting 2012 ER - TY - CONF T1 - Bryozoans from a Langhian patch reef in East Kalimantan (Indonesia) T2 - Giornate di Paleontologia XII edizione – Catania, 24-26 Maggio 2012 Y1 - 2012 A1 - Emanuela Di Martino A1 - Paul D. Taylor A1 - Vibor Novak A1 - Nadiezhda Santodomingo A1 - Anja Rösler A1 - Juan Carlos Braga A1 - Kenneth G. Johnson A1 - Willem Renema JF - Giornate di Paleontologia XII edizione – Catania, 24-26 Maggio 2012 CY - Catania, Italy ER - TY - CONF T1 - Southeast Asian and Caribbean Cenozoic Reef-coral diversity and the importance of large new collections T2 - 11th Symposium on Fossil Cnidaria and Sponges Y1 - 2011 A1 - Kenneth G. Johnson A1 - Brian R. Rosen A1 - Nadiezhda Santodomingo A1 - Willem Renema JF - 11th Symposium on Fossil Cnidaria and Sponges PB - M. aretz, S. Delculee, J. Denayer, And E. Poty (Eds.) ER -