Mayomyzon pieckoensis Bardack & Zangerl, 1968
Chordata
Craniata
Petromyzontiformes
Middle Pennsylvanian
Mazon Creek, Carbondale Fm [Westphalian D]
Illinois, US
Length: 6.5 cm
Mayomyzon was a fosil lamprey from the Upper Carboniferous fossil site of Mazon Creek. It was very similar in morphology to modern lampreys of the genus Lampetra.
April 9, 2016
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