Onchus semistriatus Agassiz

Scale bar = 5cm

Description

Old Red Sst., Old Red Sst. (undivided)
Cradley
Herefordshire
England
M3338
Description:

One of the bony spines that supported a fins of an extinct group of fishes sometimes referred to as spiny sharks, the class Acanthodii. This particular genus belongs to the order Ischnacanthida.
Moore, C.

Classification

Chordata
Gnathostomata
Acanthodii
Ischnacanthida
Ischnacanthida family
Onchus
semistriatus
X