Longodus (Long meaning long and odus meaning tooth) is an extinct genus of thelodont, placed in its own family[1][2] – Longodidae – which existed in what is now Estonia during the Ludlow epoch of the upper Silurian period.
[1][3] They are most noted for their long, needle-like scales, which run vertically along their trunk.
Their heads were almond shaped, connected to a medium trunk and short, distinctly forked tail.
Scales contained ridges along the margins, creating a ripple like visual effect.
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