Pharyngolepis oblongus Kiaer, 1911
Agnatha
Anaspida
Late Silurian
Wenlock
Ringerike, Norway
Length:15 cm
This jawless fish from the Silurian of Norway, did not have pectoral fins, but a pair of spines, making it a bad swimmer. It probably stayed close the sea floor, feeding on microorganisms.
March 7, 2015
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