| Mandageria fairfaxi.
Pronunciation: Man-daj-ee-ree-a fair-fax-i Description: Large carnivorous lobe-finned fish Class - Osteichthyes ('bony fish') Length - 1.6 metres to 1.9 metres Mandageria is the largest fish known from the Canowindra site. The 13 or so specimens known so far were found in 1993 and were described and named by Dr Zerina Johanson of the Australian Museum together with Dr Per Ahlberg in 1997. Nearly 2 metres long, it was the top predator in the Canowindra fish community, and the long, torpedo-shaped body with the large tail fins superficially resembles the quite unrelated, pike of today. Large pike are very agile, and catch their prey by ambushing it - the long body-form is particularly good for rapid acceleration - and it is likely that Mandageria would have hunted in a similar way. In sarcopterygian fishes the bones within the paired fins are equivalent to the limb bones of tetrapods, and allowed the fish to manoeuvre precisely in the water using a sculling action of the 'fleshy' fins. The large pectoral fins of Mandageria would have helped it manoeuvre around submerged logs when preparing to attack its prey. The large skull had robust, powerful jaws which were lined with a series of large fangs. | |
Copyright © 1999- | ||