Ateleaspis tesselata Traquair, 1899
Agnatha
Cephalaspidomorphi
Osteostraci
Ateleaspididae
Late Silurian
Downtonian
Scotland, UK
Length: 15-20 cm
The most basal osteostracan, Ateleaspis maybe the earliest fish with paired pectoral fins. The fins however seem to be just prolongation of the headshield.
May 30, 2016
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