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Article: A Late Permian freshwater shark from eastern Australia

Publication: Palaeontology
Volume: 32
Part: 2
Publication Date: July 1989
Page(s): 265 286
Author(s): Michael R. Leu
Addition Information

How to Cite

LEU, M. R. 1989. A Late Permian freshwater shark from eastern Australia. Palaeontology32, 2, 265–286.

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The Palaeontological Association (Free Access)


A new genus and species of elasmobranch, Surcaudalus rostratus, is described from the Late Permian Rangal Coal Measures, Blackwater, central Queensland. Surcaudalus is characterized by a palatoquadrate with a well-developed ethmoidal articulation, cladodont (phoebodontiform) dentition, absence of ribs, dorsal fin-spines with an anterior keel and a flat to concave posterior wall whose posterolateral margins bear three rows of barb-like denticles, and a non-lunate caudal fin with a well-developed epicaudal lobe. The phylogenetic significance of fin-spine characteristics, caudal fin morphology, and broad, expanded occipital segments is discussed.
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