E l specimen was discovered in a reservoir in the province of Yunnan, China, and has proved the oldest of all jawed fish are kept whole : dating 419 million years old (upper Silurian). The fossil retains all its parts except the tail fin , as published in the scientific journal Nature .
ue F named Guiyu oneiros (secret dream) or "Guiyu" that has just surpassed the previous copy of the oldest complete bony fish, Dialipina salgueiroensis which is eight million years younger.
E l Fossil, with their anatomy has been virtually untouched placed shortly after the beginning of a major evolutionary divergence : the separation between Actinopterygii and sarcopterigios, which has been dated as roughly contemporaneous with the fish, ie not later than 419 million years ago. So "Guiyu" is listed as a basal lobe-finned.
ue F named Guiyu oneiros (secret dream) or "Guiyu" that has just surpassed the previous copy of the oldest complete bony fish, Dialipina salgueiroensis which is eight million years younger.
E l Fossil, with their anatomy has been virtually untouched placed shortly after the beginning of a major evolutionary divergence : the separation between Actinopterygii and sarcopterigios, which has been dated as roughly contemporaneous with the fish, ie not later than 419 million years ago. So "Guiyu" is listed as a basal lobe-finned.
A ctinopterigios and sarcopterigios are the two classes that comprise the bony fish, which in turn belong to the jawed fishes. This difference was crucial in the evolutionary history because of bony fishes has emerged for 98% of live vertebrate . Will the sarcopterigios which give rise to tetrapods that made their fins into legs and jumped to the ground to give way to all mammals.
C omo sarcopterygians basal shares features with other sarcopterigios and the Actinopterygii has a mosaic of features of different jawed fishes belonging to the bone.
Image: Brian Choo, Museum Victoria
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