Cooyoo australis
Sign in to saveCooyoo ("fish" in the Yirandhali language) is an extinct genus of ichthyodectid ray-finned fish known from the Lower Cretaceous. It contains a single species, C. australis, known from the Albian-aged Toolebuc and Allaru Formations of Queensland, Australia. C. australis was originally named by Arthur Smith Woodward as a species of Portheus (now a probable synonym of Xiphactinus) in 1894, which was later amended to Xiphactinus.
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- Cooyoo australis
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- C. australis
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Cooyoo ("fish" in the Yirandhali language) is an extinct genus of ichthyodectid ray-finned fish known from the Lower Cretaceous. It contains a single species, C. australis, known from the Albian-aged Toolebuc and Allaru Formations of Queensland, Australia. C. australis was originally named by Arthur Smith Woodward as a species of Portheus (now a probable synonym of Xiphactinus) in 1894, which was later amended to Xiphactinus.
Some phylogenetic studies have recovered it as an indeterminate ichthyodectiform, but later ones have found it to either be a sister of Unamichthys, or more recently a true ichthyodectid related to Ichthyodectes.
Excerpted from Wikipedia’s “Cooyoo australis” article, available under the CC BY-SA 4.0 licence.