First record of the ichthyodectiform fish Cladocyclus from eastern Gondwana: an articulated skeleton from the Early Cretaceous of Queensland, Australia

Berrell, Rodney W., Alvarado-Ortega, Jesús, Yabumoto, Yoshitaka and Salisbury, Steven W. (2013) First record of the ichthyodectiform fish Cladocyclus from eastern Gondwana: an articulated skeleton from the Early Cretaceous of Queensland, Australia. Acta Palaeontologica Polonica, 59 4: 903-920. doi:10.4202/app.2012.0019

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Author Berrell, Rodney W.
Alvarado-Ortega, Jesús
Yabumoto, Yoshitaka
Salisbury, Steven W.
Title First record of the ichthyodectiform fish Cladocyclus from eastern Gondwana: an articulated skeleton from the Early Cretaceous of Queensland, Australia
Formatted title
First record of the ichthyodectiform fish Cladocyclus from eastern Gondwana: an articulated skeleton from the Early Cretaceous of Queensland, Australia
Journal name Acta Palaeontologica Polonica   Check publisher's open access policy
ISSN 0567-7920
1732-2421
Publication date 2013-06-17
Year available 2013
Sub-type Article (original research)
DOI 10.4202/app.2012.0019
Open Access Status DOI
Volume 59
Issue 4
Start page 903
End page 920
Total pages 18
Place of publication Warsaw, Poland
Publisher Instytut Paleobiologii, Polska Akademia Nauk
Collection year 2015
Language eng
Formatted abstract
The ichthyodectiform teleost fish Cladocyclus is best known from shallow marine deposits in Brazil and Morocco. A new fossil from the Early Cretaceous (late Albian) portion of the Winton Formation near Isisford, central-western Queensland, Australia, represents the first record of Cladocyclus in eastern Gondwana, and indicates that species of this fish also inhabited freshwater environments. The articulated skull and anterior part of the body are preserved as part and counter-part in what was originally a single eroded nodule of fluvially-deposited volcanolithic sandstone. The specimen is referred to Cladocyclus based on the morphology of the cleithrum (the arms are oriented at approximately 90 degrees to each other) and a mandibular articular facet that incorporates portions of the angular, the articular and the retroarticular. Cladocyclus geddesi sp. nov. can be distinguished from other species of Cladocyclus based on the possession of a more elongate horizontal arm of the cleithrum and a supraoccipital crest that is gently convex posteriorly. This discovery greatly expands the geographic range of Cladocyclus, and supports the idea of a distinct southern fish fauna in the seas surrounding the fragmenting Gondwanan landmasses during the ‘mid’-Cretaceous.
Keyword Teleostei
Cladocyclus
Cretaceous
Winton Formation
Australia
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes available online 17 Jun 2013

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Biological Sciences Publications
 
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Created: Mon, 02 Jun 2014, 12:33:59 EST by Steven W. Salisbury on behalf of School of Biological Sciences