Mandageria fairfaxi (Pronunciation: Man-daj-ee-ree-a fair-fax-i) is an extinct lobe-finned fish[1] that lived during the Late Devonian period (Frasnian – Famennian). It is related to the much larger Hyneria; although Mandageria was smaller, likely hunted in a similar manner.
Mandageria was a large predator about 1.6 metres (5.2 ft) long.[1][3] It had a long torpedo-shaped body and large tail fins. Mandageria also had large pectoral fins which could have helped it manoeuvre around submerged logs when preparing to attack its prey.[1]Mandageria had a functional neck joint, an otherwise uncommon feature among fish - Tiktaalik, Tarrasius, placoderms (esp. Arthrodira) and seahorses being other exceptions.[4]