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Fish: Thelodus parvidens Agassiz

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Double colour image of black and gray fossilized fish scales and drawing of shark-like animal
Fish: Thelodus parvidens Agassiz. Silurian. Nerepis, New Brunswick. Collector: R.F. Miller and S. Turner, 1991. New Brunswick Museum (NBMG 9237). Image width (left) < 1 cm. Some thelodont fish were shark-like in appearance. Thelodonts may have been an ancestor of sharks. The body was covered with small scales seen here. Based on scale size Thelodus pervades found in New Brunswick was about one metre long, perhaps the largest known thelodont.