The Jurassic and Cretaceous bony fish record (Actinopterygii, Dipnoi) from Thailand

Author:

Cavin Lionel1,Deesri Uthumporn2,Suteethorn Varavudh3

Affiliation:

1. Department of Geology and Palaeontology, Muséum d'Histoire naturelle, CP 6434, 1211 Genève 6, Switzerland

2. Phu Kum Khao Dinosaur Research Centre, The Sirindhorn Museum, Sahat Sakhan District, Kalasin 46140, Thailand

3. Bureau of Palaeontological Research and Museum, Rama VI Road, Bangkok 10400, Thailand

Abstract

AbstractThis first overview of the bony fish record from the Jurassic and Cretaceous continental deposits of Thailand reveals a significant diversity, with 16 taxa in four formations (the Khlong Min, Phu Kradung, Sao Khua and Khok Kruat Fms). Four of these taxa have already been diagnosed and described, and a couple of others are sufficiently well preserved to be diagnosed in the future. The other taxa are represented at present by fragmentary and isolated remains. The highest diversity is observed among ‘semionotids’, which occur in the four formations. Sinamiids are represented by at least three taxa that occur only in the Sao Khua and the Khok Kruat Formations. Pycnodont fishes are known by rare and isolated dentitions and teeth in the Khlong Min and Sao Khua Formations, and lungfishes referred to Ferganoceratodus occur in the Khlong Min and the Phu Kradung Formations. The assemblages provide few palaeogeographical indications at present, except for evidence of relationships with China and Central Asia. However, it is expected than once the phylogenetic relationships of these taxa are resolved, we will be able to reconstruct precise palaeogeographical scenarios.

Publisher

Geological Society of London

Subject

Geology,Ocean Engineering,Water Science and Technology

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