Gyracanthus formosus Agassiz, 1837
Acanthodii
Climatiiformes
Gyracanthidae
Upper Carboniferous
Upper Coal Measures (Westphalian A-D)
England & Scotland, UK
Length: 50 cm
Gyracanthus was a large freshwater "spiny shark" (acanthodian). It is essentially known from the characteristic long and ornamented pectoral fin spines and almost nothing else. Many species of Gyracanthus have been described and G. formosus found throughout Great Britain is the type species.
April 5, 2015
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