TF508 Bontang (Miocene of Indonesia)

Where: Indonesia (0.1° N, 117.4° E: paleocoordinates 0.2° N, 118.1° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Tortonian (11.6 - 7.2 Ma)

• provisional estimated age early Tortonian

Environment/lithology: reef, buildup or bioherm; reef rocks

• Early Miocene to Middle Miocene deltas prograded rapidly eastwards, contributing to the infilling of the Kutai Basin (Hall & Nichols, 2002). Within this depositional regime, carbonate production took place in proximal delta-front settings contemporaneously with the rapid and near-constant siliciclastic input (Lokier et al., 2009). Miocene carbonates formed as low- and high-relief build-ups and coral carpets on delta-front mouth bars, and on the more distal shelf along the seaward margin of the Mahakam Delta where they are strongly influenced by siliciclastic input throughout their evolution (Wilson, 2005). These carbonates have been interpreted as transitional shelf sediments deposited between deltaic and deep-marine facies (Allen & Chambers, 1998).

Size classes: macrofossils, mesofossils

Collection methods: bulk,

Primary reference: E. Di Martino and P. D. Taylor. 2014. Miocene Bryozoa from East Kalimantan, Indonesia. Part I: Cyclostomata and 'Anascan' Cheilostomata. Scripta Geologica 146:17-126 [L. Liow/L. Liow]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 173657: authorized by Lee Hsiang Liow, entered by Franziska Franeck on 07.10.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Gymnolaemata
 Cheilostomata - Stomachetosellidae
Cigclisula "sp. 1" Canu and Bassler 1927
Cigclisula "sp. 2" Canu and Bassler 1927
 Cheilostomata - Phidoloporidae
Rhynchozoon sp. Hincks 1895
 Cheilostomata - Schizoporellidae
 Cheilostomata - Hippopodinidae
 Cheilostomata - Hippoporidridae
Scorpiodinipora cf. costulata Canu and Bassler 1929
 Cheilostomata - Antroporidae
Parantropora laguncula Canu and Bassler 1929
 Cheilostomata - Onychocellidae